Interesting. Funnily enough, my comments are coming through to Lemmy as 'Undermined' too (just a PieFed bug, easily fixed), so the fact that you saw it (as well as the comments by the others I mentioned) means it's not a language thing. That's good, in a way, because it should be physically impossible to actually de-select it.

So, sorry - at least we can rule one thing out, but I don't have any more suggestions.