Blender won't start

Hello everyone.
I’m using Debian Buster (stable) to run Blender on a 32 bit environment.
2.7x worked fine until now, that I installed 2.8x from BackPorts.
Now, when I try to start Blender, I get this output in the terminal:

Warning: property 'release_confirm' not found in keymap item 'OperatorProperties'
blender(BLI_system_backtrace+0x37) [0x2ff5f87]
blender(+0x161b80e) [0x1ab380e]
blender(draw_outliner+0x904) [0x1ab6504]
blender(+0x162a9e7) [0x1ac29e7]
blender(ED_region_do_draw+0x8db) [0x17650ab]
blender(wm_draw_update+0x491) [0x13ea4e1]
blender(WM_main+0x41) [0x13e81f1]
blender(main+0x2ee) [0x11c8f9e]
/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0xb3a7cb41]
blender(_start+0x31) [0x12107d1]
BLI_assert failed: /build/blender-jGb2IS/blender-2.82.a+dfsg/source/blender/editors/space_outliner/outliner_draw.c:1051, outliner_draw_restrictbuts(), at '(restrict_column_offset * ((void)0, U.widget_unit) + (0.45f * U.widget_unit)) == outliner_restrict_columns_width(soops)'
Aborted

What can I do?