https://bugs.winehq.org/show_bug.cgi?id=52432
--- Comment #7 from john jwork123nl@yahoo.com --- Created attachment 71840 --> https://bugs.winehq.org/attachment.cgi?id=71840 Example of a big image from which only a small part is actually drawn on the GUI
I looked into another application from Synapse audio a bit, it is called "Dune 3", which has the same problem with drawing knobs on the UI.
The way the application is themed is with different skins. A skin defines all the positions of a knob in a single picture (see attachment KnobBig.png) One png contains many images of a knob, stacked on top of each other, one image for each position the knob can be in. Only one of these images is actually drawn.
So perhaps the problem is that Synapse audio's applications accidentally trigger a check if a texture would be too big to draw, while they do not actually are going to draw that texture.