If you like Debian and like to help make it better, and also want to use testing please review this guide where I try to cover many common things and improve your experience:
https://makedebianfunagainandlearnhowtodoothercoolstufftoo.computer/doku.php?id=start
Thanks for being a Debian testing user :)
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Lots of bugs that have been filed but still many that have not. I log a bug about once a month.