Hi
Only after opening new swap with mobile device (phone) the message window does not limit writing on right edge, but goes further to the right and is approximately twice as wide as it should be. You can still write and send the message, but with small annoyance of moving screen left and right. Message field does not make any problems when accessing it via already opened swap.
I am using Samsung J5, Android 7.1.1., Samsung internet 12.1.1.36. Please let me know if you need more info regarding the device or software installed.
Sorry, I didn't take screen-shot...
LP