I recently run on a bug that was bugging
me for some time.
I often fill large areas with rock blocks when i don't need tchem anymore. I always saw that while imps were claiming path tiles some of the block blueprints just disappeared, and i had to place tchem again. Similar to disappearing mining markinks in another thread.
This time i managed to take a screenshot of interesting situation. While imp was claiming one tile. The tile in front of him turned from regular dirt into stone wall with dirt ontop. That adjacent block replacement before imp even stand on it may be the cause of disappearing blueprints.
stone wall appeared just one tile left from imp claiming path.
![[Image: BJ5zco1.jpg]](http://i.imgur.com/BJ5zco1.jpg)
Large area test (right side was filled with stairbut most of tchem was build before imps started to claim territory):
![[Image: 117s2QU.jpg]](http://i.imgur.com/117s2QU.jpg)
Test Result - On the left side nearly every second BP disappeared, due to additional adjacent blocks updates:
![[Image: ZHchC1x.jpg]](http://i.imgur.com/ZHchC1x.jpg)
another test - stairs, ladders at walls at bottom part and hudrauilcs are all affected, and many BPs are missing after territory was claimed:
![[Image: BdwDBOM.jpg]](http://i.imgur.com/BdwDBOM.jpg)
I also noticed that while imps are reinforcing walls often two blocks are replaced instead of one.
It's not gamebreaking, but annoying.

I often fill large areas with rock blocks when i don't need tchem anymore. I always saw that while imps were claiming path tiles some of the block blueprints just disappeared, and i had to place tchem again. Similar to disappearing mining markinks in another thread.
This time i managed to take a screenshot of interesting situation. While imp was claiming one tile. The tile in front of him turned from regular dirt into stone wall with dirt ontop. That adjacent block replacement before imp even stand on it may be the cause of disappearing blueprints.
stone wall appeared just one tile left from imp claiming path.
![[Image: BJ5zco1.jpg]](http://i.imgur.com/BJ5zco1.jpg)
Large area test (right side was filled with stairbut most of tchem was build before imps started to claim territory):
![[Image: 117s2QU.jpg]](http://i.imgur.com/117s2QU.jpg)
Test Result - On the left side nearly every second BP disappeared, due to additional adjacent blocks updates:
![[Image: ZHchC1x.jpg]](http://i.imgur.com/ZHchC1x.jpg)
another test - stairs, ladders at walls at bottom part and hudrauilcs are all affected, and many BPs are missing after territory was claimed:
![[Image: BdwDBOM.jpg]](http://i.imgur.com/BdwDBOM.jpg)
I also noticed that while imps are reinforcing walls often two blocks are replaced instead of one.
It's not gamebreaking, but annoying.