I found a peculiar bug the other night using firmware version 1.5. I had set up a gang with the left and right main faders to link GEQ, PEQ, Compressor, Gate, etc. I left the fader position un-ganged.
Through the show I made a few tweaks to the graphic EQ in fader flip mode. Then at the end of the show, I zeroed the GEQ in fader flip mode by pressing the SEL buttons.
Shortly after I hit the fader flip button again and the Left channel GEQ was not zeroed. If I pressed the Right channel SEL button, then fader flip, it was Zeroed. I went back into the ganging section on the touch screen and confirmed that the gang was still there and that GEQ was included. It was.
I went back to fader flip mode, changed some things… then zeroed it. Exited fader flip, then went back in on the Left channel, and again, some EQ faders were not zeroed. Selected the right channel, fader flip, zeroed.
So I decided to delete the gang. Then I went back to each of the Left and Right GEQs and zeroed them. Then recreated the gang. Same thing, Left channel GEQ was not zeroed.