Minecraft.net has extremely inconsistent button hover effects since 2020 or so. Examples:
1.
2.
3.
4.
5.
6.

1 and 2 turn into an ugly gradient. 3 darkens a bit. 4 (on feedback homepage) changes the text color. 5 doesn't change at all, but adds a "yes" hover text for some reason. 6 (on the dungeons website) lightens.

There are way more examples – but please, decide on a single hover effect. Multiple hover effects like this hurt UX.

I assume the third option is the correct one - as it can be seen at the Launcher, too.