Couldn't find current GLX or EGL context
gtk3-demo doesn't print anything, but gnome-games does:
gnome-games: ../src/dispatch_common.c:863: epoxy_get_proc_address: Assertion `0 && "Couldn't find current GLX or EGL context.\n"' failed.
@alatiera suggested the mesa extension is missing.
org.gnome.Platform: 1ab48e9de4add85ce956ab1f25bc4aefaf3910a20629c0ec5fe5951491b18627
org.gnome.Sdk: 968a4bb3fe21a7eb692f8950a136bf57167dcd8c58c0b66759b5afab8c14f7b4
Edited by Alice Mikhaylenko