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Firefox changes "%" to "_" when downloaded filenames contain "%" character

  • 3 replies
  • 3 have this problem
  • 2 views
  • Last reply by zeroknight

rappyfx
rappyfx
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Pretty niche problem, but I couldn't find anyone else with the same kind of problem. Whenever I try to download a file with "%" on its filename, the "%" character gets changed to an underscore. Like say, if I try to download a file named "Skyrim 100% save file", it becomes "Skyrim 100_ save file". Not sure why this is even happening, but it only happens in Firefox. Not Chrome nor Edge.

Pretty niche problem, but I couldn't find anyone else with the same kind of problem. Whenever I try to download a file with "%" on its filename, the "%" character gets changed to an underscore. Like say, if I try to download a file named "Skyrim 100% save file", it becomes "Skyrim 100_ save file". Not sure why this is even happening, but it only happens in Firefox. Not Chrome nor Edge.

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.

  • switch to the Default System theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window
rappyfx
rappyfx Question owner
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None of this worked for me unfortunately. The same problem pops up whether I'm in troubleshoot mode or not/has hardware acceleration enabled/disabled. Never really enabled userChrome customization too. Maybe there's something in the about:config page that's causing it? Or could this be a bug in the browser itself?

zeroknight
zeroknight
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Can you link an example file download where you see this?