[tbb-bugs] #25962 [Applications/Tor Browser]: Tor Browser crash: [xcb] Unknown sequence number while processing queue

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#25962: Tor Browser crash: [xcb] Unknown sequence number while processing queue
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 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  tbb-crash                 |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Changes (by cypherpunks):

 * status:  needs_information => new


Comment:

 Replying to [comment:4 gk]:
 > We could then bisect the offending commit and help Mozilla with a fix
 (which we would backport for Tor Browser until we pick it up).
 lol you're too kind :P I expected that you wouldn't care much in view of
 the ton of work that you have.

 > Does anyone know how to reproduce this problem reliably? Like, what
 environment does one need to have to hit this issue?
 I hit that after a transition from Ubuntu 17.10 -> Ubuntu 18.04 -> Lubuntu
 18.04 where I messed up and ended up breaking and deleting many packages,
 I didn't even have `zlibc` installed (after installing it the problem
 didn't happen - so far), so I guess remove `zlibc` and something else if
 needed and do the procedure I described in comment:1.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25962#comment:6>
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