On some websites canvas is used to display images then 'Do not invert dynamic content' option should help.
Most likely you have some small images inverted since Midnight Lizard assumes they are text-like controls (e.g. ➕ ➖ ❌)
And without inversion those controls would be black on dark background so I think it is more important to invert them than keep small images uninverted.
Best regards
Midnight Lizard