So, my plugin runs fine on Windows. Never had a problem. But on the Mac there are strange problems, that will eventually make me lose my head.
Following problems occur:
In AU Lab, I open the plugin, and there are knobs in it that will change the colour when the mouse enters them. On Mouse Exit they become normal again. The thing is, that in AU Lab, half of the time, when the mouse enters them, nothing happens. Then after some time, sometimes they react on mouse entering, sometimes not. Sometimes they also just flash up once when the mouse enters, and then get normal again while the mouse is still over them.
Other people have told me, that in Logic (which I do not own), the repainting of the knobs stopped, so when the user moved the knobs, the result was hearable in the plugin, but the knob did not update its graphics.
Edit: Same Problem with the JUCE Demo AU! Sometimes the keyboard and slider reacts to mouse enters and exits, and sometimes not.
What could this be?