When I try to place a structure through blueprint made by structure builder, Something weird happend. The steps to reproduce this bug goes here:

1. create a little blueprint in the structure builder.
   
2. place this blueprint. Everything is normal until now.
   
3. Try to click the same area of the already placed structure, then two tiles stacked(actually crossed) and the little blueprint will be removed from my inventory.
   

If I use a blueprint made by myself, it will work normally. This makes me a little troubled because everytime I click there carelessly I have to go back to the builder and make a new one. Please help me.

MC version: 1.12.2
LT version: 1.5.0
CreativeCore version: 1.10.0
Other mods installed: WorldEdit, WorldEdit Forge CUI 3

It's fixed in the newest version. The rightclick has been reworked and it will now work more consistent.