Comment 92 for bug 1782984

Revision history for this message
Tycho Kirchner (spawn-bugs) wrote : Re: PCManFM freezes with Assertion `!xcb_xlib_threads_sequence_lost' failed when clicking on a file or folder in 18.04

Apparently it's a bug in libx11, which persisted for a long time but
became much more likely with an update in libxcb.
Please see the still open merge request/patch at

https://gitlab.freedesktop.org/xorg/lib/libx11/-/merge_requests/34

Further reading:
This bug report (as it turned out now, it's probably *not*
a bug in gtk though):
https://gitlab.gnome.org/GNOME/gtk/-/issues/2767