Looks like that's an issue of the mod(s) rather than of the game itself.
I'm entirely unable to reproduce this within the regular version.
If you can find a situation where this does occur within the unmodded game, that'd be reason to fix it. Alternatively, if it's something that occur PURELY because of a mod being run (and not because of specific scripting in the mod) that would also be a reason to fix it.
But for the moment, I'm going to have to assume that this is an issue specific to those mods you played.