github light high contrast: Floating window has same color as background

[bluss]

Using nvim v0.9.5, github-nvim-theme d832925 with lazy.nvim package manager.

It looks like Normal and NormalFloat have the same background color, and this means that things like hover floaters (using NormalFloat) wash out against the background. github light default does not have this problem.

Both light/dark high contrast themes have this same issue.