Rename of variables are cancelled if user clicks the variable type menu. This occurs if the user has not press enter yet to accept their input and then clicks the variable type menu. I also noticed this occurs if the Viewport tab is selected in the blueprint editor and the user clicks into the Viewport on step 4. If the user clicks anywhere else in the editor, the input is accepted. I've attached [Link Removed] to demonstrate the issue.
This occurs on Windows. Mac and Linux have not been tested yet.
This does occur in //UE4/Release-4.22 @ CL 5708642 and //UE4/Release-4.21 @ CL 4899592 so this has not been marked a regression.
Result: Name change is cancelled
Expected Result: Name change is accepted
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-72271 in the post.