Autosave does not work in mesh edit mode

I am using blender 2.82.7. while staying in mesh edit mode any change I made does not save to the auto save blender file. autosave stayed at the moment before entering mesh edit mode. if switch back to object mode, autosave works as intended.
it can be frustrated when doing retopology, since one would stay in mesh edit mode for quite long time. manually save file in mesh edit mode works fine.