While playing, I made a blueprint that can crash your game. You can place the blueprint but hovering over the placed ghost with the blueprint in hand can crash your game.
Steps to reproduce:
1. Take blueprint
2. Place it in any world without it being built
3. Move the blueprint ghost so that pipes overlap with the placed blueprint pipes. (See image)
4. Game crashes
Blueprint string:
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
[2.0.12] Crash on blueprint placement
Re: [2.0.12] Crash on blueprint placement
Thanks for the report. Even though you didn't attach a crash log (please do that next time), based on the image I think it is a duplicate of 116456.