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CloseReviews for Minimize On Start and Close by Bart
Rated 3 out of 5 stars
Because it didn't work with all closing options, I found this alternative that does work: https://addons.mozilla.org/nl/firefox/addon/ACMMize/.
Rated 3 out of 5 stars
I'm using Windows 10 and Firefox. It does not work when I press X to close, but does work when I close it via hotkeys.
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