I have this same issue since the move from 24 to 25. I'll run from terminal and no errors appear, just hangs and never comes to the screen or panel.

Arch linux, compiz standalone, 3.16.1 kernel if that matters. Did the dependencies change between 24 and 25?

I'm on Arch linux and opera 25.0.1583.1. Since the latest updated, my fonts are not being, I guess, rendered properly is the right term. They are pixelated and not scaled properly. This is on all websites that don't define their own fonts and the settings tab. Manually setting a different font or size makes no difference.

A really annoying issue that makes me use another browser since it is a pain to read anything.