As the title says - steps to reprodcue the issue:

1. Open OS ticket v15.4 on Google chrome
2. open an existing ticket via the browser
3. start typing
4. delete the messege via backspace
5. start typing again
6. 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.