I don't know if this is a known issue, but since build .95 (I don't remember encountering it on build .92, but maybe I just got lucky, since I only had that build for a couple of days), I am seeing an issue where my WiFi randomly "crashes". That is, it disconnects, goes to "Disabled" in the Quick Settings panel, and cannot be re-enabled until reboot.
Never seen this issue on Android 10 before.
EDIT: I'm currently on build .100. Issue also seen on builds .95 and .98.