When I fire up Mission Control, there are some corrupted textures ("glitch") overlaying Unity3D window. The texture is different each time I enter Mission Control, and they are related to what other programs I'm using. After I switched to Unity window, the corrupted textures disappear. I'm using the 15in MacBook Pro with Retina Display Late 2013 with dedicated graphics.
I've also seen corrupted graphics in Yosemite Safari and Preview after waking up from sleep with external monitor, and zooming makes them disappear.
Is it a Yosemite bug or a hardware defect?
From System Information:
NVIDIA GeForce GT 750M: Chipset Model: NVIDIA GeForce GT 750M Type: GPU Bus: PCIe PCIe Lane Width: x8 VRAM (Total): 2048 MB Vendor: NVIDIA (0x10de) Device ID: 0x0fe9 Revision ID: 0x00a2 ROM Revision: 3776 gMux Version: 4.0.8 [3.2.8] Displays: Color LCD: Display Type: Retina LCD Resolution: 2880 x 1800 Retina Retina: Yes Pixel Depth: 32-Bit Color (ARGB8888) Main Display: Yes Mirror: Off Online: Yes Built-In: Yes ASUS PB287Q: Resolution: 3840 x 2160 @ 60 Hz Pixel Depth: 32-Bit Color (ARGB8888) Mirror: Off Online: Yes Rotation: Supported Connection Type: DisplayPort Television: Yes