kernel log shows 6 times in a row "gameoverlayui segfaults at 1c000"
ok, I did narrow it down:
the following verbatim steamruntime 32bits libs are breaking the overlay GL and vulkan:
libxcb-dri3 libxcb libxcb-xf86dri libfontconfig libfreetype
I did report some other issues which seem very close. Those issues were related to the fact that some verbatim steamruntime libs are breaking the client itself. This issue is consistent with those other issues.
Nothing extracted yet.
I usually disable the overlay. But I do enable sometimes, for instance, to do purchases in dota2.
I did enable the overlay today, it does not come up. Tested a bit more with other games, it does not come up at all, GL or vulkan.