Typing text in Gmail or JIRA moves the cursor unexpectedly

[tschoem]

The issue is more visible in JIRA where the cursor moves so much that you end up typing backwards.

To reproduce you can simply enable the extension on a JIRA domain and type a new bug description or comment.
You should see stuff being written backwards.

Something seems to interfere with syntax checker or this might be due to the text boxes not being in standard TEXT elements, rather aria type textboxes.

Thanks for the awesome extension otherwise.