My issue is that whenever you're in Horizontal mode and you want to reply a message, the ui simply won't let you text or even send the message, it frustrated me so much such a basic function that the software devs didn't have the courage to fix it with the security patches
Currently rocking an S24 ultra with the latest One UI7 July 2025 patch, so far so good though.
Do share some screenshots/screen recordings, would help with understanding the issue. Alternatively, you can also submit bugs via error report (long press Members app > error report).
