问题
Looks like chrome.storage.local is continuing to store any data even if an extension was uninstalled.
This behaviour is not observed in Chrome, only in Firefox.
Any ideas about how to fix it?
回答1:
This was bug 1213990, which is fixed in Firefox 51.
来源：https://stackoverflow.com/questions/39117890/removing-a-firefox-web-extension-does-not-clear-chrome-storage-local