I have a large polytonic Greek section in my XCompose file, with sequences beginning with the Micro sign 'µ', but I'm unable to use the feature 'Caps Lock Always Capitalizes Letters' because for some reason it capitalizes the Micro Sign to the real Greek capital Mu 'Μ' even though the micro sign isn't supposed to be interchangeable with the real lowercase Greek letter.

The other feature 'Fall Back to Case Insensitive Matches' doesn't seem to be able to catch this anomaly for the other way around either, so the sequences just simply don't work with caps lock on when the auto caps feature is enabled.

Something else worth pointing out is that it also capitalizes the letters I type even when I'm not currently composing (which is evident by ß capitalizing to ẞ even though the latter isn't on my keyboard layout), which is kind of invasive.