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Strange pop-up window when opening Firefox. (lemmy.ca)

submitted 7 months ago by cyborganism@lemmy.ca to c/firefox@lemmy.ml

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Very recently I started noticing something weird every time I launched Firefox. Whether it's a normal session or private session it always happens. When I launch the application there is a small pop-up window that appears with squares of colors, like primary colors, blue, red, yellow. It appears for a fraction of a second. Has anyone else noticed this?

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[–] dan@upvote.au 10 points 7 months ago (1 children)

I'd guess it's one of your extensions. Try disable all of them and see if it still happens.

[–] Dymonika@beehaw.org 1 points 7 months ago

Additionally, OP could probably stand to (re)run Malwarebytes.