Testing in Tier 1, for the first position only, the cursor disappeared on the following characters:
1 ! m M w % "
It almost looked like key related with 1 and ! and m and M, but it didn't follow through.
Then, with the letter 'a' in the first position, the cursor disappeared on the following characters in the second position:
- r / G Q R Y O { } & ( )
I didn't test any past that.
There appears to have started in v1089 (I tested v1076, and v1082-v10810).
Cheers,
Ancient Lady
AGK Community Tester and AppGameKit Master