Environment per About QGIS: QGIS version 3.21.0-Master QGIS code revision 8498c55 Qt version 5.15.2 Python version 3.9.5 GDAL/OGR version 3.3.2 PROJ version 8.1.1 EPSG Registry database version ...
What is the bug or the crash? After upgrading to 3.20.1, QGIS hangs on start-up (or hangs for a while, then quits, I'm not sure. Here's a stack trace: Info: Warning: Ignoring XDG_SESSION_TYPE=wayland ...