When you open the app or After file upload in a message room, the layout goes up, to outside of viewport. Because of that, it shows a small part of the background on the bottom. And also hides a small part of the top bar. This hidden part of the top bar disrupts the use of the buttons, especially the context menu, on the right.
If you rotate the screen and return to the original position the layout returns to normal.
When you open the app or After file upload in a message room, the layout goes up, to outside of viewport. Because of that, it shows a small part of the background on the bottom. And also hides a small part of the top bar. This hidden part of the top bar disrupts the use of the buttons, especially the context menu, on the right.
If you rotate the screen and return to the original position the layout returns to normal.
After rotate: