P: Adjustment brush stops working after deleting photo

I have created a NEW post because of the MANY other posts about this problem.

I have seen several posts on the Lightroom forum and this Photoshop Family forum of the adjustment brush stops working.  Many of these were unsolved.   A recent post on the Lightroom forum has a REPEATABLE scenario to make the adjustment brush stop working. See here in posts #9, 10 and 11  https://forums.adobe.com/thread/2082068

The scenario is as follows and as the forum post shows happens on Windows and Mac.

Use the Adjustment Brush
Remove any photo - chose Delete from Disk
Adjustment brush stops working (no new pins, can't select old pins, nothing in history)
Select Spot Tool and create random spot/heal and immediately delete spot/heal
Select Adjustment Brush and the Adjustment Brush will start working again.

This behavior is completely REPEATABLE.