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Removing rounded corners of the firefox window on MacOS

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Hello there,

During my quest of trying to get macOS and apps to look more like I want, I haven't found any answer online on how to modify the rounding of Firefox corners to be square. I have also heard that Firefox has a known bug of not respecting system appearance, so I have decided not to mess around with important system files. So my question is: What would be your recommended way to square the window corners for macOS?

Hello there, During my quest of trying to get macOS and apps to look more like I want, I haven't found any answer online on how to modify the rounding of Firefox corners to be square. I have also heard that Firefox has a known bug of not respecting system appearance, so I have decided not to mess around with important system files. So my question is: What would be your recommended way to square the window corners for macOS?

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Unless you can post that known bug report no one is going to know what that is? If they made Firefox browser mac to look like the mac windows then to make changes from that requires something like Windows userChrome.css edit to make those changes otherwise it comes down to Apple OS to allow such changes since they are very particular to allow anyone else other then Apple to configure how their OS works.