It comes and goes for me. Hit the enter / return key in a post and see what happens then.Mine has been doing this for a few days now, but just tried it again and it seems to have been fixed. Fingers crossed.
This issue still exists and I'm not too sure what to bloody do about it! - I might try a different keyboard / input editor - but that will come with it's own issues now we've had this one for so long. Some smilies and links and stuff might stop working so I'm hoping Google crack on with an update. I keep checking but nothing yet.
I'm still using chrome for same reason. I'm perfecting my spelling too ha.
Even the return key causes it now.
I bet if I timed a new browser installation on my phone it would be less than a minute.