I will try this right away and see if this work if so you sir deserve a medal of honor lol. This has been plaguing my project to the point its cost me hours of development because of how slow i can debug things and get through code in my project. Even locking up my PC sometimes due to the severe leaks by the editor.
Its been here since they released ue5 officially which is a shame because it was NOT there during the main branch and it seems like they snuck in some untested functionality and left it there for people who use BP to rot. I hope things get better with 5.1 because most of the UI changes have been a huge regression in my eyes in terms of being able to develop compared to 4.27.
Edit:
Can you clarify what you did actuallly did you comment out FPrpertyInstanceInfo or you did something else. Thought you modified the code where you mentioned DebugTreeLeaf but it seems unmodified.