“Blender 2.93 Alpha seems to be very sensible to selections since it already happened very often to me that selecting something with Left Click made the program crash 🤪.”
Perhaps a secret plot to encourage “right-click select” to come back in fashion? 🤔 I’ve actually switched back to RCS. For simple reasons: I like the W hotkey and the ability to tweak verts with a right-click/hold while modeling. It also gives the index finger a little breather while the ring finger gets some important work to do. Silly reasons, I know.