Seems to be intermittent, happens sometimes on hard refresh sometimes on a regular refresh. Terminal window confirms the request is being made and returning a 404 each time but it doesn't always appear in console. I'll work on boiling this down to a test case but it's kind of a mess right now. Possibly a duplicate of bug 929160 (looks like a feature request not a bug) or bug 1137920 (I couldn't duplicate to see if it was the same behavior).
Created attachment 8627481 [details] test.js Test file to reproduce. Commenting out the console.log on line 16 reduces the frequency of occurrence to close to zero. Annother attachment is coming with how I have included the code on the page (it's not a straight script tag).
Created attachment 8627483 [details] testscript.js I was calling test.js by including this inside script tags in the footer of a webpage. It was the only HTML on the page. If these two files don't combine to reproduce the bug needsinfo me and I can give you the entire HTML.
Per policy at https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Inactive_Bugs. If this bug is not an enhancement request or a bug not present in a supported release of Firefox, then it may be reopened.
Status: NEW → RESOLVED
Last Resolved: 4 days ago
Resolution: --- → INACTIVE
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