Regression, game "Hover!" from rapps does not start anymore, "There was an error allocating memory in Hover!"

This is a regression.

Expected result
in current releases/0.4.14 "Hover!" starts up fine, (after complaining about the 256 color nonsense)

Observed result
in current master head "Hover!" does not start any longer. (after complaining about the 256 color nonsense), it simply fails with a msgbox: "There was an error allocating memory in Hover!"
0.4.15-dev-7858-g5b82ada_HoverFailed.webm
0.4.15-dev-7858-g5b82ada_HoverFailed.log
I started it 2 times in this log, one time without breakOnFirstChance, a 2nd time with breakOnFirstChance. We can see an exception being thrown from MSVCRT.

My gutfeeling: Either a change to CRT, or a change to IMM32 is responsible for the app to fail now.