I'm using the English version of the game (HE version 99, I think), and a current Git snapshot of ScummVM.
When playing the "Radioactive Trash Collector" game (which is built into your spy watch, so no savegame is necessary), the clear plastic cover over the "STOP" button is drawn without transparency. In Wine, you can see the button underneath it.
I'm including screenshots from ScummVM and Wine.
Looks like another missing feature, the flag value 0x400000 is set in drawWizImage() for this particular image.