Issue Summary
On Edit dialog in PR page, the dropdown for user mentions is not completely shown and is clipped within the Edit dialog
Steps to Reproduce
- Create a PR or Go to an existing page
- Click Edit, an Edit dialog opens up
- Start typing `@` to mention a user somewhere near the bottom of the description box
Expected Results
Mentions dropdown values should be shown fully even if it overflows
Actual Results
Mentions dropdown is clipped
Workaround
Currently there is no known workaround for this behavior. A workaround will be added here when available