Slide show 2/3 covered with black overlay

Version: - just upgraded minutes ago. Finished writing a slide show and went to view. When I go to look at it with the slide show set to manual, only the left third of the slide shows correctly. The other 2/3 of the screen is solid black with ONLY colored text showing up through the black. Tried on two computers and got the same result. This is a total panic situation, the slide show is un-presentable. Yes, I tried all sorts of settings for the show, all resulted in the same.

Both computers running Fedora Linux - release 22 (kernel: 4.1.10-200 if that matters) also fully patched minutes ago. One is 32 bit, the other 64. I tried a NEW presentation and it worked fine. I cut my presentation which has a left background constant image down to one page and that too screws up. It is something about having a background that screws this up. I am reporting this as a bug.

The most likely answer is the OpenGL/OpenCL bug (see reply to Q64314).