In the scriptable tools with the 5.5 version the referenced bug is happening consistently with all users that are testing my 5.5 version of my toolkit I have on the marketplace.
In the image below if this icon is present and you select it (it is a blueprint in this case) then it will force close the tool, forcing you to open it again. However, now the one you selected will have the blueprint icon and now when you select it it’ll select it and stay open.
It is far worse with data assets, the same thing happens BUT if you select a different one the process repeats as expected but if you select the first one it force shuts down again. It’s highly inconvenient and makes no sense as to why it happens now in 5.5 but didn’t happen in 5.4.
I’ll be forced to upload this to 5.5 with this very apparent engine bug as outside of that everything works fine.