Describe the bug
The comment input box will replace user input with labels when the user presses enter or tab.

To Reproduce
Steps to reproduce the behavior:

1. Go to an issue
2. Open the label inputbox with shift+L
3. Close the label inputbox with esc
4. Open the comment inputbox with c
5. Type something like "fea" and press enter or tab
6. Observe the user inputed text is replaced with a label

Expected behavior
Comment inputbox should...

• add a new line with the user presses enter
• do nothing when the user presses tab

Screenshots
N/A

Desktop (please complete the following information):

• OS: Mac