Georg Koppen:
Did you start the bundle via the start-tor-browser.desktop thing/the start-tor-browser script shipped with it or by other means? If the former any ideas on how to reproduce your crashes?
Sorry, I screwed up! I use a custom script that does basically the same, and while I did copy the ASAN_OPTIONS, I missed the exporting of that variable. With it exported, the error disappears. Sorry for the noise!
Cheers!