More like one of a few ‘infinite’ loops, as explained above, which one could find in the game. Rend Blackhand in particular is prone to this, for example with Infernal Combustion.
You could call it a bug or a quirk, depending on your viewpoint. It’s definitely one of the lesser issues present in the game, though.
It might be lengthy animations, since there is a ‘cap’, I believe, after which the ‘action’ eventually stops, so that such loops are not that infinite after all.
By the way, relaunching the game is a known trick to skip those animations (some people even perform a bit of firewall mumbo jumbo to that end, but I don’t want to get into this).
You could find a way, in this very forum, even (yeah, reading skills rule again), but there’s no need, we’ve seen what it generally looks like, although I don’t think I’ve personally tested this particular interaction.