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(In Linux) Browser's drop-down menus down change background-color on hover

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  • Last reply by James

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When using Firefox 57.0.x on Linux Mint 18.x on one PC, Firefox's own drop-down menus aren't changing their background-color on hover. This on hover effect works perfectly fine on this PC when booted into Windows. It also works when using the same version of Firefox and Linux Mint on another PC. So I'm guessing there's some combination of Firefox, hardware on this PC, and Linux that's causing the on hover effect to not work. What's more, the background-color effect does work on the icons in the toolbar, just not in the drop-down menus that appear when you click on one of the menus.

This bug originated when Firefox overhauled the browser a couple months back. Changing kernels and versions of LM haven't fixed it.

When using Firefox 57.0.x on Linux Mint 18.x on one PC, Firefox's own drop-down menus aren't changing their background-color on hover. This on hover effect works perfectly fine on this PC when booted into Windows. It also works when using the same version of Firefox and Linux Mint on another PC. So I'm guessing there's some combination of Firefox, hardware on this PC, and Linux that's causing the on hover effect to not work. What's more, the background-color effect does work on the icons in the toolbar, just not in the drop-down menus that appear when you click on one of the menus. This bug originated when Firefox overhauled the browser a couple months back. Changing kernels and versions of LM haven't fixed it.

All Replies (5)

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Hi, this has to do with your GTK+ theme as Firefox will be themed by your chosen theme respectively, try some different themes in Mint by going to Appearance, or find the customization options in Settings. If this helped solve your problem, please mark as solution

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Thanks for that quick reply! It does narrow it down a bit. What I mean is, comparing themes on this PC to the other Linux PC (where it works) shows that they're both using the same theme settings. BUT, on the PC where it's not working if I change the theme for "Controls" to Mint-Y-Dark, it works! If I change the theme for Controls to anything else, like Mint-X options and even other Mint-Y options, it doesn't.

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You might need to re-install your version of Mint, perhaps during an upgrade, the theme configuration files got corrupted -- during upgrades, you should update the lists when prompted instead of pressing keep. If you don't want to reinstall your copy of Mint, you could keep the Window controls on Mint-Y-Dark if it continues to work for you.

If this solved your problem, please mark as solution.

Mkll modificouno o

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I don't know. The last 2 Mint versions were done as clean installs, not in-place upgrades. That would mean both times the Mint theme config files were corrupted? And it only happened with Firefox after the big rebuild Mozilla did.

Fingers crossed that this is fixed in a future update to either Firefox or Mint.

Oddly enough, the background-color hover effect works in the Menu bar drop-downs of Firefox. Just not the Page Actions drop-down or Toolbar menu drop-downs.

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If you change the GTK3 theme while Firefox was still running you may need to restart Firefox for the theme to fully work on Firefox.

The official Firefox Releases since 46.0 have required GTK 3.4 (three.four) at minimum installed to run and also needed GTKL3 themes to rtheme Firefox as GTK2 themes will not work. Some Linux distros have delayed this change in their provided Firefox packages so it is Not a recent change by Mozilla per say.

James modificouno o