Bug #10288: Fix newly identified issues to make our test suite more robust and faster
Step "the Tor Browser shows the [...] error" is fragile
We noticed that it happens to fail sometimes (3 times in the last 50 days, as noted on #11087#note-9). Dogtail seem to find the page opened by the Tor Browser, but not its heading. Debug log and infos are pasted on the previously mentioned note. Attaching the video to this ticket.
Revert "Mark the "Tor Browser shows the [...] error" step as fragile."
This reverts commit fdcc32559a8a8374e3b63684ed7b3482eac906cc.