Calling the swap operators can result in Blender crashing. From my
testing, the behavior is inconsistent, as sometimes a crash is triggered
and other times it isn't. Though notably, they seem involve nodes
already linked to other nodes, or zones.
The crashing stems from the operators trying to access deleted data.
There were two places where this happens that were identified, one
involving removed links and the other involving removed nodes.
Pull Request: https://projects.blender.org/blender/blender/pulls/146909
e7cae0b220