I noticed that my cannons (in the Kingdoms expansion) often don't work correctly.
Sometimes they load, but the instead of firing, they just stand there without doing anything. Other times they won't even load (right-click an enemy to attack it, then the 'firing' icon appears for a second on the unit card, then disappears again, and nothing happens)

Anyone else having the same problem?

(might just be a general mtw2 bug, but I never used artillery much in vanilla, so I don't know)