Thanks for confirming the Zool 2 problem - this release did include an upstream fix or two that might have changed this, but I hadn't yet had time to check.
If I turn Turbo ON the grafic error in Zool AGA is gone. Turbo OFF brings it back. I alway have Turbo OFF, because i have otherwise grafic issues in "No Second Prize". There the sun gets a bar. But I also have this error on all other platforms with the game as soon as a turbo is activated.