Removed a node together when removes a link connected for a specific node type

Hello, Walter.
It’s been a long time.
How are you?

I found a problem and I cannot check or analyze how this problem.
So, I ask you what I should try.

I took a video for this problem.

Please help me again.
Thank you.

I cannot tell from the video how to reproduce the problem.

If you use go-debug.js and check for messages in console, are there any issues?

Sorry, there’s no issues at all while removing the link and undo it when I use go-debug.js.
(I still have several issues from go-debug.js on the other situations what I couldn’t resolved.)

I understand you cannot tell something without any clues.
I’ll contact you again after I get some clue about this issue more.
Thank you, Walter!