CyanogenMod/android_frameworks_base — comment on commit f7382855f1d3c5d9dbd3e5191f7336e47736ef04
File:  line 0
By JerryScript:

It appears as if the framebuffer is not being cleared/released when the video view is called. For example, on Barcode Scanner, when the app opens, about 1/3 of the screen retains the previous buffered image in the middle of the screen. The gui border and elements render fine, and the video can be seen around the artifact. If you like, I can give you screenshots and logcat/dmesg.