Mend Flesh causes Familiar to get Bugged

Mend Flesh causes the Familiar to get stuck somehow. It stops moving and attacking. It doesn’t cast Lighting Strike. It stays still and is obsessed with casting Mend Flesh. I tried ordering it to move but it didn’t listen.

This is but a nail in the coffin of Mend Flesh. Has anyone seriously maxed this ability and received good results? I tried so hard to make it work as the update to it with its healing over time seems excellent on paper. But everything about how it performs falls flat. The Familiar casts it too late all the time. You already drank a potion or cast Blood of Dreeg and only then it heals you. Alternatively you expect it to heal you but it takes a bit too long to wind up its animation and you die… That 12,000 heal would be really helpful Mr. Familiar! Maybe some abilities aren’t meant to ever be maxed out unless it’s just for the sheer challenge factor of playing with a goofy ability.

Here’s another instance of this bug: https://youtu.be/scAKlJEbk14?t=60

Note how, after the fight at 1:00, one of the ravens follows me away, and the other stays behind for the rest of the run. It does look like Mend Flesh was cast right before the bug.