Description
Probably because storage view/edit (v2.45).
Scenario:
I'm editing a script which stores data. While I'm editing, script is running in other tabs and storing new values. But as soon as I save the edited code, data is restored from when I opened options page, losing all the recently added values from background tabs.
Unless I did a manual change to stored value, saving a script after updating the code shouldn't overwrite storage.
Suggestion:
Create a flag like hasManuallyEditedStorage, initially false. When a script opens for editing, add a listener to input event (with { once: true }) in Storage textarea. If the listener is triggered, it's because I manually changed storage by editing textarea value, so set hasManuallyEditedStorage = true. When I click to save, the decision about if storage will be saved from textarea or not depends on hasManuallyEditedStorage value. Unless it's true, storage shouldn't be overwritten. After saving or clicking to edit a different script, hasManuallyEditedStorage should back to false and the listener should be recreated.