Add button not disabled when clearing fewer than three characters
Steps to reproduce
- Open Advanced tab in options page
- Type "aaa" into the custom filters input field
- Use backspace to remove all characters
- Type "aa" into the input field
- Use backspace to remove all characters
Observed behavior
- After 1) Add button is disabled
- After 2) Add button is enabled
- After 3) Add button is disabled
- After 4) Add button is enabled
- After 5) Add button is enabled
Expected behavior
- After 1) Add button is disabled
- After 2) Add button is enabled
- After 3) Add button is disabled
- After 4) Add button is enabled
- After 5) Add button is disabled