We have a multitouch mxing console application and we're getting many complaints from users about "flicker" while moving the faders (Juce::Slider). It seems to be centered around the Yosemite update, although we had had various complaints on previous versions of OSX, so the update might not be the exact culprit. Also, testing on our machines locally, we're not able to reproduce the issue despite the fact that the system specs (graphics card, etc.) are nearly identical to some of the users reporting the problem.
Has anyone seen a similar sort of graphical flicker where an entire component turns transparent for a split second during a repaint?
Here's a screenshot and a gif showing the problem: