How do I cancel when in the Customize interface?
The customize interface gives only Done or Restore Defaults.
Esc commits changes. Closing the configuration window commits changes.
How do I cancel out of any changes I made?
Additional System Details
- User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:70.0) Gecko/20100101 Firefox/70.0
There is no cancel for customize mode, all changes are applied. There is only an Undo for Restore Defaults. You will have to undo changes you made yourself. The customization is stored in a pref named browser.uiCustomization.state, so you can make a copy of the value of this pref.