Howdy ,
I have been working with on your issue to try and see if we could get a crash to occur. We have both been unsuccessful with attempt a repro with the steps that you have provided. I have created a string variable and placed it into my level blueprint. I have changed the name multiple times and have had no crashing. Would there be any additional steps that could help with recreating this crash? What version of UE4 would you be working off of? Any additional information would be greatly appreciated.
Thanks and have a great day!