Samuel revolver sprite lingering on screen

[Alphonia]

There is a chance when you use Posse on Samuel and have an additional attack when attacking (like relentless instability) it causes just the sprite of the revolver to linger on screen until you do another action (including Observe's counter Revolver attack). Maybe also need another action from the enemy to happen like them having counter attack. Get this bug very rarely so it's hard to pin down what causes it.