Hello, this is not really a bug but an annoying feature, in this snapshot the two buttons got separated, being two different controls.
I use return or enter as my chat opening button since I am more used to it from other games.
On this snapshot if I set return to open chat the keypad return will not work for it, and same goes the other way around, I like to have both and press the one closer to me at the time and on the new snapshot is impossible.