I’m trying to open multiple Level Blueprints at the same time so I can compare them, but whenever I switch to a different level Unreal Engine closes the blueprint of the level I’m leaving.
You will need to open other instances to see the multiple levels, or add the levels on your world map and see one and other.
You can manage multiple levels to see them and compare on this way:
There’s a discussion about this here too:
I hope it helps.
By the way, I think I just did this another way by accident. If you do a project wide “Find in blueprints” for a variable that exists on a different level blueprint, then double click the result, it opens that level blueprint without opening the level (and doesn’t close anything). Then you can copy-paste stuff across easily