Hello Erik,?
This test was with 1.1-75m freshy loaded.? ?My tinySA is HW V0.3? ? SN SA-20102809
The Level Cal works as expected, green progress "bar" etc, and completes.
However, the Self Test does not show the same green progress "bar"...

The only thing that appears to change is that the display reference level jumps from -90dB, to about -50dB. Please see attached photo above. .?
At that point the unit is in that frozen twitching mode. I have to power cycle to resume operation.?
I really appreciate the fast response and your help here!
Best!?
Steve