As the title says - steps to reprodcue the issue:
- Open OS ticket v15.4 on Google chrome
 
- open an existing ticket via the browser
 
- start typing
 
- delete the messege via backspace
 
- start typing again
 
- notice crash
 
Hope you can fix it cause it's really frustrating.
3/3 computers multiple times this bug could've been reproduced almost every time. if not on the first try then on the 2nd or 3rd.