These were commented in daaa41ae07, doesn't seem to have made an observable difference, uncommenting these now to see if chat system specs still pass.
daaa41ae07
A shot in the dark to see if these are the culprits for the many random spec failures in CI.
Prior to this fix, the upload was removed from DOM when collapsed and not decorated again on expand, which was causing lightbox to not get reapplied. The fix is reverting to previous state where content was not removed from DOM.