I started experiencing this problems, whereby my themes (any of them) don't show properly, but they get mixed in colors, the white spaces sometimes get highlighted, etc. See example below:
Has anybody stumbled upon this issue? I upgraded to Emacs 27, and updated my Prelude but it continues like this.
Actually, it had to do with white-space mode! Just set
(global-whitespace-mode 0)
And fixed.