Oh!! I fixed mine too! I was editing my admin info under Users > Authors & Users and that must have somehow unchecked the “Use the visual editor when writing” box in Users > Your Profile. Phew!! Thanks for the info!
I am also missing my Visual Editor! It disappeared after I installed some plugins so I thought maybe that had something to do with it. I tried deactivating the new plugins but nothing changed with the editor. Anyone know what’s going on? Thanks!