I'm glad you solved the issue, and as Dracko81 pointed out, it might happen that you sometimes inherit a vassal's levies. They should disappear whenever you raise troops and lower them, but as shown by your issue, you might not be able to actually lower them if you don't have any other levies raised first.
I'll look into it and see if there is anything we could do to make them visible in the military tab as well.
I'll look into it and see if there is anything we could do to make them visible in the military tab as well.
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