>I think there's some discrepancy in the non-default properties (namely, positioning) that may have been set in the forms for the labels in this class, under previous names. You may just go and reset them all to default, that should clean them out, i.e. force the controls to re-inherit from the class.
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In the original forms the other controls were adjusted (in design time), since the control itself was smaller than class size and there is no run-time (and of course no design-time) resize for this control.

I think I'll leave my changes and whatever is going to break because of this change, we'll eventually find it out and fix.

>As for renaming back... backup and try. I usually stay away from renaming back... actually, I give them proper names when creating them, i.e. before there's ever any instance anywhere, so I don't have to do that. (How do I know this, then? Well, others' classes...)

I like new names better - so I'll keep them. I actually always give proper names to everything in my classes / forms, etc., even if it's just a label never intended to be called / changed.