When bluetooth keyboard disconnects itself on 10 min idle timeout(which is normal), the first key press just losses, while the keyboard reconnects successfully. After ~3-5 sec the operation returns to normal.
It doesn't occurs on the same system with Windows 10 - the key doesn't lost on reconnect.
One of my Android device Asus Zenhone Max with kernel 3.10.108 doesn't have this problem, while the other, Sony Xperia Tablet Z2, with 3.4.0 kernel, suffers from it.
It was reported earlier: https://www.spinics.net/lists/linux-bluetooth/msg42966.html
Please, help investigate the problem - it's really annoying.
Also tested on kernels v3.2 (Ubuntu 12.04.1 LTS), v3.13 (Ubuntu 12.04.5 LTS) - the problem still there.
Occurs on different computers, with different BT-adapters (in-built, USB external).
Not sure if it regression or not. Help.