diff --git a/wp-includes/js/plupload/wp-plupload.js b/wp-includes/js/plupload/wp-plupload.js
index e42288fbe4..6839fd81d7 100644
--- a/wp-includes/js/plupload/wp-plupload.js
+++ b/wp-includes/js/plupload/wp-plupload.js
@@ -120,8 +120,7 @@ window.wp = window.wp || {};
 		 * @param  {plupload.File} file     File that was uploaded.
 		 */
 		tryAgain = function( message, data, file ) {
-			var times;
-			var id;
+			var times, id;
 
 			if ( ! data || ! data.responseHeaders ) {
 				error( pluploadL10n.http_error_image, data, file, 'no-retry' );
@@ -210,8 +209,8 @@ window.wp = window.wp || {};
 		 * @param  {string}        retry    Whether to try again to create image sub-sizes. Passing 'no-retry' will prevent it.
 		 */
 		error = function( message, data, file, retry ) {
-			var isImage = file.type && file.type.indexOf( 'image/' ) === 0;
-			var status  = data && data.status;
+			var isImage = file.type && file.type.indexOf( 'image/' ) === 0,
+				status = data && data.status;
 
 			// If the file is an image and the error is HTTP 5xx try to create sub-sizes again.
 			if ( retry !== 'no-retry' && isImage && status >= 500 && status < 600 ) {
@@ -327,10 +326,16 @@ window.wp = window.wp || {};
 			this.browser.on( 'mouseenter', this.refresh );
 		} else {
 			this.uploader.disableBrowse( true );
-			// If HTML5 mode, hide the auto-created file container.
-			$('#' + this.uploader.id + '_html5_container').hide();
 		}
 
+		$( self ).on( 'uploader:ready', function() {
+			$( '.moxie-shim-html5 input[type="file"]' )
+				.attr( {
+					tabIndex:      '-1',
+					'aria-hidden': 'true'
+				} );
+		} );
+
 		/**
 		 * After files were filtered and added to the queue, create a model for each.
 		 *
@@ -521,7 +526,7 @@ window.wp = window.wp || {};
 
 				/*
 				 * If the browser node is not attached to the DOM,
-				 * use a temporary container to house it, as the browser button shims 
+				 * use a temporary container to house it, as the browser button shims
 				 * require the button to exist in the DOM at all times.
 				 */
 				if ( ! attached ) {
diff --git a/wp-includes/js/plupload/wp-plupload.min.js b/wp-includes/js/plupload/wp-plupload.min.js
index bd612b1415..f95d5eeabe 100644
--- a/wp-includes/js/plupload/wp-plupload.min.js
+++ b/wp-includes/js/plupload/wp-plupload.min.js
@@ -1 +1 @@
-window.wp=window.wp||{},function(e,l){var u;"undefined"!=typeof _wpPluploadSettings&&(u=function(e){var n,t,i,d,p=this,r={container:"container",browser:"browse_button",dropzone:"drop_element"},s={};if(this.supports={upload:u.browser.supported},this.supported=this.supports.upload,this.supported){for(t in this.plupload=l.extend(!0,{multipart_params:{}},u.defaults),this.container=document.body,l.extend(!0,this,e),this)l.isFunction(this[t])&&(this[t]=l.proxy(this[t],this));for(t in r)this[t]&&(this[t]=l(this[t]).first(),this[t].length?(this[t].prop("id")||this[t].prop("id","__wp-uploader-id-"+u.uuid++),this.plupload[r[t]]=this[t].prop("id")):delete this[t]);(this.browser&&this.browser.length||this.dropzone&&this.dropzone.length)&&(this.uploader=new plupload.Uploader(this.plupload),delete this.plupload,this.param(this.params||{}),delete this.params,n=function(t,r,a){var e,o;if(r&&r.responseHeaders)if((o=r.responseHeaders.match(/x-wp-upload-attachment-id:\s*(\d+)/i))&&o[1]){if(o=o[1],(e=s[a.id])&&4<e)return l.ajax({type:"post",url:ajaxurl,dataType:"json",data:{action:"media-create-image-subsizes",_wpnonce:_wpPluploadSettings.defaults.multipart_params._wpnonce,attachment_id:o,_wp_upload_failed_cleanup:!0}}),void i(t,r,a,"no-retry");s[a.id]=e?++e:1,l.ajax({type:"post",url:ajaxurl,dataType:"json",data:{action:"media-create-image-subsizes",_wpnonce:_wpPluploadSettings.defaults.multipart_params._wpnonce,attachment_id:o}}).done(function(e){e.success?d(p.uploader,a,e):(e.data&&e.data.message&&(t=e.data.message),i(t,r,a,"no-retry"))}).fail(function(e){500<=e.status&&e.status<600?n(t,r,a):i(t,r,a,"no-retry")})}else i(pluploadL10n.http_error_image,r,a,"no-retry");else i(pluploadL10n.http_error_image,r,a,"no-retry")},i=function(e,t,r,a){var o=r.type&&0===r.type.indexOf("image/"),i=t&&t.status;"no-retry"!==a&&o&&500<=i&&i<600?n(e,t,r):(r.attachment&&r.attachment.destroy(),u.errors.unshift({message:e||pluploadL10n.default_error,data:t,file:r}),p.error(e,t,r))},d=function(e,t,r){_.each(["file","loaded","size","percent"],function(e){t.attachment.unset(e)}),t.attachment.set(_.extend(r.data,{uploading:!1})),wp.media.model.Attachment.get(r.data.id,t.attachment),u.queue.all(function(e){return!e.get("uploading")})&&u.queue.reset(),p.success(t.attachment)},this.uploader.bind("init",function(e){var t,r,a,o=p.dropzone;if(a=p.supports.dragdrop=e.features.dragdrop&&!u.browser.mobile,o){if(o.toggleClass("supports-drag-drop",!!a),!a)return o.unbind(".wp-uploader");o.bind("dragover.wp-uploader",function(){t&&clearTimeout(t),r||(o.trigger("dropzone:enter").addClass("drag-over"),r=!0)}),o.bind("dragleave.wp-uploader, drop.wp-uploader",function(){t=setTimeout(function(){r=!1,o.trigger("dropzone:leave").removeClass("drag-over")},0)}),p.ready=!0,l(p).trigger("uploader:ready")}}),this.uploader.bind("postinit",function(e){e.refresh(),p.init()}),this.uploader.init(),this.browser?this.browser.on("mouseenter",this.refresh):(this.uploader.disableBrowse(!0),l("#"+this.uploader.id+"_html5_container").hide()),this.uploader.bind("FilesAdded",function(e,t){_.each(t,function(e){var t,r;plupload.FAILED!==e.status&&(t=_.extend({file:e,uploading:!0,date:new Date,filename:e.name,menuOrder:0,uploadedTo:wp.media.model.settings.post.id},_.pick(e,"loaded","size","percent")),(r=/(?:jpe?g|png|gif)$/i.exec(e.name))&&(t.type="image",t.subtype="jpg"===r[0]?"jpeg":r[0]),e.attachment=wp.media.model.Attachment.create(t),u.queue.add(e.attachment),p.added(e.attachment))}),e.refresh(),e.start()}),this.uploader.bind("UploadProgress",function(e,t){t.attachment.set(_.pick(t,"loaded","percent")),p.progress(t.attachment)}),this.uploader.bind("FileUploaded",function(e,t,r){try{r=JSON.parse(r.response)}catch(e){return i(pluploadL10n.default_error,e,t)}return!_.isObject(r)||_.isUndefined(r.success)?i(pluploadL10n.default_error,null,t):r.success?void d(e,t,r):i(r.data&&r.data.message,r.data,t)}),this.uploader.bind("Error",function(e,t){var r,a=pluploadL10n.default_error;for(r in u.errorMap)if(t.code===plupload[r]){a=u.errorMap[r],_.isFunction(a)&&(a=a(t.file,t));break}i(a,t,t.file),e.refresh()}))}},l.extend(u,_wpPluploadSettings),u.uuid=0,u.errorMap={FAILED:pluploadL10n.upload_failed,FILE_EXTENSION_ERROR:pluploadL10n.invalid_filetype,IMAGE_FORMAT_ERROR:pluploadL10n.not_an_image,IMAGE_MEMORY_ERROR:pluploadL10n.image_memory_exceeded,IMAGE_DIMENSIONS_ERROR:pluploadL10n.image_dimensions_exceeded,GENERIC_ERROR:pluploadL10n.upload_failed,IO_ERROR:pluploadL10n.io_error,SECURITY_ERROR:pluploadL10n.security_error,FILE_SIZE_ERROR:function(e){return pluploadL10n.file_exceeds_size_limit.replace("%s",e.name)},HTTP_ERROR:function(e){return e.type&&0===e.type.indexOf("image/")?pluploadL10n.http_error_image:pluploadL10n.http_error}},l.extend(u.prototype,{param:function(e,t){if(1===arguments.length&&"string"==typeof e)return this.uploader.settings.multipart_params[e];1<arguments.length?this.uploader.settings.multipart_params[e]=t:l.extend(this.uploader.settings.multipart_params,e)},init:function(){},error:function(){},success:function(){},added:function(){},progress:function(){},complete:function(){},refresh:function(){var e,t,r,a;if(this.browser){for(e=this.browser[0];e;){if(e===document.body){t=!0;break}e=e.parentNode}t||(a="wp-uploader-browser-"+this.uploader.id,(r=l("#"+a)).length||(r=l('<div class="wp-uploader-browser" />').css({position:"fixed",top:"-1000px",left:"-1000px",height:0,width:0}).attr("id","wp-uploader-browser-"+this.uploader.id).appendTo("body")),r.append(this.browser))}this.uploader.refresh()}}),u.queue=new wp.media.model.Attachments([],{query:!1}),u.errors=new Backbone.Collection,e.Uploader=u)}(wp,jQuery);
\ No newline at end of file
+window.wp=window.wp||{},function(e,u){var l;"undefined"!=typeof _wpPluploadSettings&&(l=function(e){var n,t,i,d,p=this,a={container:"container",browser:"browse_button",dropzone:"drop_element"},s={};if(this.supports={upload:l.browser.supported},this.supported=this.supports.upload,this.supported){for(t in this.plupload=u.extend(!0,{multipart_params:{}},l.defaults),this.container=document.body,u.extend(!0,this,e),this)u.isFunction(this[t])&&(this[t]=u.proxy(this[t],this));for(t in a)this[t]&&(this[t]=u(this[t]).first(),this[t].length?(this[t].prop("id")||this[t].prop("id","__wp-uploader-id-"+l.uuid++),this.plupload[a[t]]=this[t].prop("id")):delete this[t]);(this.browser&&this.browser.length||this.dropzone&&this.dropzone.length)&&(this.uploader=new plupload.Uploader(this.plupload),delete this.plupload,this.param(this.params||{}),delete this.params,n=function(t,a,r){var e,o;if(a&&a.responseHeaders)if((o=a.responseHeaders.match(/x-wp-upload-attachment-id:\s*(\d+)/i))&&o[1]){if(o=o[1],(e=s[r.id])&&4<e)return u.ajax({type:"post",url:ajaxurl,dataType:"json",data:{action:"media-create-image-subsizes",_wpnonce:_wpPluploadSettings.defaults.multipart_params._wpnonce,attachment_id:o,_wp_upload_failed_cleanup:!0}}),void i(t,a,r,"no-retry");s[r.id]=e?++e:1,u.ajax({type:"post",url:ajaxurl,dataType:"json",data:{action:"media-create-image-subsizes",_wpnonce:_wpPluploadSettings.defaults.multipart_params._wpnonce,attachment_id:o}}).done(function(e){e.success?d(p.uploader,r,e):(e.data&&e.data.message&&(t=e.data.message),i(t,a,r,"no-retry"))}).fail(function(e){500<=e.status&&e.status<600?n(t,a,r):i(t,a,r,"no-retry")})}else i(pluploadL10n.http_error_image,a,r,"no-retry");else i(pluploadL10n.http_error_image,a,r,"no-retry")},i=function(e,t,a,r){var o=a.type&&0===a.type.indexOf("image/"),i=t&&t.status;"no-retry"!==r&&o&&500<=i&&i<600?n(e,t,a):(a.attachment&&a.attachment.destroy(),l.errors.unshift({message:e||pluploadL10n.default_error,data:t,file:a}),p.error(e,t,a))},d=function(e,t,a){_.each(["file","loaded","size","percent"],function(e){t.attachment.unset(e)}),t.attachment.set(_.extend(a.data,{uploading:!1})),wp.media.model.Attachment.get(a.data.id,t.attachment),l.queue.all(function(e){return!e.get("uploading")})&&l.queue.reset(),p.success(t.attachment)},this.uploader.bind("init",function(e){var t,a,r,o=p.dropzone;if(r=p.supports.dragdrop=e.features.dragdrop&&!l.browser.mobile,o){if(o.toggleClass("supports-drag-drop",!!r),!r)return o.unbind(".wp-uploader");o.bind("dragover.wp-uploader",function(){t&&clearTimeout(t),a||(o.trigger("dropzone:enter").addClass("drag-over"),a=!0)}),o.bind("dragleave.wp-uploader, drop.wp-uploader",function(){t=setTimeout(function(){a=!1,o.trigger("dropzone:leave").removeClass("drag-over")},0)}),p.ready=!0,u(p).trigger("uploader:ready")}}),this.uploader.bind("postinit",function(e){e.refresh(),p.init()}),this.uploader.init(),this.browser?this.browser.on("mouseenter",this.refresh):this.uploader.disableBrowse(!0),u(p).on("uploader:ready",function(){u('.moxie-shim-html5 input[type="file"]').attr({tabIndex:"-1","aria-hidden":"true"})}),this.uploader.bind("FilesAdded",function(e,t){_.each(t,function(e){var t,a;plupload.FAILED!==e.status&&(t=_.extend({file:e,uploading:!0,date:new Date,filename:e.name,menuOrder:0,uploadedTo:wp.media.model.settings.post.id},_.pick(e,"loaded","size","percent")),(a=/(?:jpe?g|png|gif)$/i.exec(e.name))&&(t.type="image",t.subtype="jpg"===a[0]?"jpeg":a[0]),e.attachment=wp.media.model.Attachment.create(t),l.queue.add(e.attachment),p.added(e.attachment))}),e.refresh(),e.start()}),this.uploader.bind("UploadProgress",function(e,t){t.attachment.set(_.pick(t,"loaded","percent")),p.progress(t.attachment)}),this.uploader.bind("FileUploaded",function(e,t,a){try{a=JSON.parse(a.response)}catch(e){return i(pluploadL10n.default_error,e,t)}return!_.isObject(a)||_.isUndefined(a.success)?i(pluploadL10n.default_error,null,t):a.success?void d(e,t,a):i(a.data&&a.data.message,a.data,t)}),this.uploader.bind("Error",function(e,t){var a,r=pluploadL10n.default_error;for(a in l.errorMap)if(t.code===plupload[a]){r=l.errorMap[a],_.isFunction(r)&&(r=r(t.file,t));break}i(r,t,t.file),e.refresh()}))}},u.extend(l,_wpPluploadSettings),l.uuid=0,l.errorMap={FAILED:pluploadL10n.upload_failed,FILE_EXTENSION_ERROR:pluploadL10n.invalid_filetype,IMAGE_FORMAT_ERROR:pluploadL10n.not_an_image,IMAGE_MEMORY_ERROR:pluploadL10n.image_memory_exceeded,IMAGE_DIMENSIONS_ERROR:pluploadL10n.image_dimensions_exceeded,GENERIC_ERROR:pluploadL10n.upload_failed,IO_ERROR:pluploadL10n.io_error,SECURITY_ERROR:pluploadL10n.security_error,FILE_SIZE_ERROR:function(e){return pluploadL10n.file_exceeds_size_limit.replace("%s",e.name)},HTTP_ERROR:function(e){return e.type&&0===e.type.indexOf("image/")?pluploadL10n.http_error_image:pluploadL10n.http_error}},u.extend(l.prototype,{param:function(e,t){if(1===arguments.length&&"string"==typeof e)return this.uploader.settings.multipart_params[e];1<arguments.length?this.uploader.settings.multipart_params[e]=t:u.extend(this.uploader.settings.multipart_params,e)},init:function(){},error:function(){},success:function(){},added:function(){},progress:function(){},complete:function(){},refresh:function(){var e,t,a,r;if(this.browser){for(e=this.browser[0];e;){if(e===document.body){t=!0;break}e=e.parentNode}t||(r="wp-uploader-browser-"+this.uploader.id,(a=u("#"+r)).length||(a=u('<div class="wp-uploader-browser" />').css({position:"fixed",top:"-1000px",left:"-1000px",height:0,width:0}).attr("id","wp-uploader-browser-"+this.uploader.id).appendTo("body")),a.append(this.browser))}this.uploader.refresh()}}),l.queue=new wp.media.model.Attachments([],{query:!1}),l.errors=new Backbone.Collection,e.Uploader=l)}(wp,jQuery);
\ No newline at end of file
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 6af3c36e77..e67290ef2f 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47832';
+$wp_version = '5.5-alpha-47834';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.