Okay I’ll slightly rephrase that; I have no way to reliably replicate it. Whereas most bugs you can eventually pin down a “do steps 1-4 and the bug appears”, I’ve yet to find anything that will do that with a 100% success rate for this bug. Sure I can get it to happen every now and then, but if I can’t figure out what is causing it then the fact that it is occurring is practically worthless.
I mean sure I can replicate it with water some of the time, but all that really tells me is that that is not the cause of the problem, rather that some random thing that happens to interact with it (which is a very broad category) is.
As for unplayability it seems that the majority of the times this problem shows up can be (at least for me) solved by saving/reloading. Annoying, yes, but not game-breaking.