Impossible to close this ticket? It's looks like the problem in something else.
I have lubuntu & lxde, if I reinstall lubuntu-desktop, then problem solved, but appears in lxde, if I reinstall lxde desktop, then lxpanel only crashes in lubuntu... strange..
Update:
As it turned out, it is just happening accidentally, after log in... lxpanel was blinking and disappeared. Also, left mouse sometimes stops working, click by touchpad fixes it.
Last edit: Ivan Alexandrov 2019-11-29
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Impossible to close this ticket? It's looks like the problem in something else.
I have lubuntu & lxde, if I reinstall lubuntu-desktop, then problem solved, but appears in lxde, if I reinstall lxde desktop, then lxpanel only crashes in lubuntu... strange..
Update:
As it turned out, it is just happening accidentally, after log in... lxpanel was blinking and disappeared. Also, left mouse sometimes stops working, click by touchpad fixes it.
Last edit: Ivan Alexandrov 2019-11-29
Looking at the attached "_usr_bin_lxpanel.1000.crash" report, looking at the assembly, the crash , this is using lxpanel 0.9.3, and the crash is happening at https://git.lxde.org/gitweb/?p=lxde/lxpanel.git;a=blob;f=plugins/task-button.c;h=3e990689c67de7f46d1283f76ea3042a76a0dbdc;hb=9dbda5c15782596983ae61478c1612262633ae41#l1668 , and register says that win is NULL, so this should be the same as https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=855025 and so I think this is fixed by https://git.lxde.org/gitweb/?p=lxde/lxpanel.git;a=patch;f=plugins/task-button.c;h=dfcc9acca9158c8380f9f9add6dafbdfcf96763d .