Background Page Fetch Doesn't Work on Firefox >79
Closed this issue · 3 comments
Describe the bug
backgroundPageFetch() in /js/preload.js is returning an error and when processNonenteredAssignments() in /js/grades.js attempts to use the in operator, an error occurs
To Reproduce
Attempt to enable what-if grades on Firefox 84
Expected behavior
What-if grades turns on and works without issue
Additional context
Attempting to rebuild extension without in operator resulted in Response is undefined or null. Last error: Error: Could not establish connection. Receiving end does not exist.
Hi! Thanks for filing this issue.
We're currently aware of a number of problems relating to making Schoology API calls in Firefox (it appears to be a browser bug as everything worked up until Firefox 79).
We don't have an open ticket for that issue though, so I'm going to convert this ticket to be the more general problem.
Thanks!
Root cause of this issue is undetermined; it's either a browser bug (as the extension works fine on Firefox 78) or an undocumented change to the WebExtensions API. More investigation is needed.