The editor will almost guarantee to crash when blueprint node is copied over and there is no reference already built such as variables or the correct file name. The crash doesn’t usually happen suddenly, but let’s say you paste the blueprint nodes and some of it can’t find what you’re talking about, say a variable, if you double click on it or try to set as variable, it will likely crash. If it’s in reference for a file that doesn’t exist such as an enum, it will certainly crash by double clicking on it.
I’m uncertain if it’s just copying over from 4.24 to 4.25 or if it’s simply a general error that happens but I’m copying over code from 4.24 to 4.25 manually and it crashes quite often. I could export or rewrite all the nodes, which I’ve been doing here and there but thought to mention this bug.