The “Send Group Text” popup can only be closed with the keyboard.
It should close when clicked on the background or have an “X” button.
I use a wireless mouse and the keyboard is a few meters away next to the PC.
If by accident, I click the “chat” icon and this popup opens, the only way to close it is to stop riding, get off the bike and walk to the keyboard.
While this popup is open, the mouse doesn’t work on any other element in the game!
I’ve stared at it for entire sessions because I hit the “chat” by accident and didn’t want to get dropped.