The extension floods the console with errors:
TypeError: can't access property "active", extension.storage.website is undefined
- prevent moz-extension://b42827cf-1bbb-493e-a105-0d87443905e3/content-scripts.js:95
- moz-extension://b42827cf-1bbb-493e-a105-0d87443905e3/content-scripts.js:280
- (Async: EventListener.handleEvent)
- moz-extension://b42827cf-1bbb-493e-a105-0d87443905e3/content-scripts.js:269
- #injectIntoIsolatedWorld resource://gre/modules/ExtensionContent.sys.mjs:684
- inject resource://gre/modules/ExtensionContent.sys.mjs:669
- injectInto resource://gre/modules/ExtensionContent.sys.mjs:519
- loadContentScript resource://gre/modules/ExtensionProcessScript.sys.mjs:412
This happens at every event monitored by the extension (with a different stack trace)