A recent update changed the app icon for Firefox to a black background instead of the normal light (see attached pic - the Thunderbird icon is proper). I do *not* use dark mode, so this looks bad, is an eyesore and frustrates me.
Also Mozilla devs need to realize that not everyone is using the latest macOS on purpose -- some people like sane GUIs -- so styling the icons to favor just one version is frustrating. Looking at my dock, now it seems as if something is wrong with Firefox...
@spearsonthank you for your advice on changing the icon. I would just clarify that you need to drag the .icns to the small icon at the top of the "get info" window, not the large icon at the bottom. I found some round icons online and switched it. I feel that the rounded square icons are a step back. If we have the ability to have transparent icons, why not utilize that?
I agree, V106 Icon looks EXTREMELY disproportionate when compared to other icons in the dock. It's not "Tall" enough - I am assuming this is an optical illusion (because of the dark background), but please modify it to make it look more native - right now it is extremely out of place. Needs another revision for sure.