This should fix this failure:
```
Failures:
1) Thread list in side panel | full page when there are no threads that the user is participating in shows a message
Failure/Error: measurement = Benchmark.measure { example.run }
expected to find text "You are not participating in any threads in this channel." in "Community\nEverything\nMy Posts\nMore\nMessages\nInbox\nChannels\nRandom 25\nPersonal chat\nRandom 25\nShowing all messages\nOngoing discussions"
```
The screenshot failure was clearly showing the spinner still being present.
f189c20578