I've noticed a few issues with research. They may have been identified already, but I don't see a forum topic for them.
First, the research completion percentage is often displayed as 0.0% even when it's not. For example, if you load a saved game while research is being conducted, it's listed as 0% no matter what, until it increases by a certain amount and is listed properly.
Second, the game auto-pauses for research completion, but only does so about half the time. The other half, the research completes and you don't know about it until you look and realize that a bunch of your scientists are unallocated, and what they were working on is no longer on the research menu.