Sakya, i found a few more issues (playing with latest version):

Tekken 3 - Accelerometer not working.

Saving/loading games using gles GPU has many problems - loading from game selection menu does not work at all. saving from within a game makes it stuck many times.

It seems that gles doesn't like the messages that pops up during next/previous slot selections - can make a game very laggy or stuck.

when pressing "Save States" for a ROM, the first time it loads shows no states - you need to close and reopen again to see the saved states.

Colin McGrae Rally 2 stopped working.