Raspberry Pi400 with updated Bullseye and firmware:
Using generally available overlays with RetroArch git, launching content from another frontend, such as ozone, runs and closes without issue. Launching the same content with an overlay ‘on’ also runs fine from xmb, but on content quit, the xmb frontend fails with a ‘segmentation fault’. Simply turning the overlay ‘off’ allows content to run and quit from xmb without issue.
Same git code and compile options on latest Fedora off Intel Linux, xmb content with an overlay ‘on’ runs and quits from xmb without issue.