if a slime corpse is between the player and another target (usually another slime) and you try to attack it, you get the message that "Your approach is blocked." But slime corpses can be walked through, so this is frustrating and counter-intuitive.
To replicate, do the things I just said.
Always figured someone else would have reported this by now, but a quick lazy search attempt gave nothing and this is probably the 10+ time I've starting writing this out before shrugging it off and moving on so I want to submit it.