The floorp icon in the top left corner doesn't change

[Shay0Plays]

It still shows the floorp icon when in the preview it shows

[EnderSpy29]

do have the light.png and the dark.png in the right location? or did you just copy the .css file

[Shay0Plays]

I have both the light.png and dark.png in the same folder as the .css file

[yrieth]

Had the same issue, apparently you can fix it by removing the button in that position from the tool bar. Disadvantage: the new icon is useless.