For more information see here Bug Report Template Build: v1.11.10 4546 Mode: All Platform: Steam DLC Installed: No Reproducibility:Always Severity:Major Type: Building blocks Summary:Block shape "Cut corner E & F" are missing sides and can cause surrounding blocks to glitch as well. Description:When rotating aforementioned block shapes, there is one side missing both visually AND physically. This bug is very hard to describe verbally, so refer to pictures. Steps to Reproduce: 1) Get a block and pick shape "Cut corner E or F" 2) Refer to pictures how to rotate the block and how they affect surroundings 3) Place block to observe the bug Screenshots, Crash Logs, any other Relevant Information or Download links: Bug shown; notice that the rightmost shape has top face missing. The missing face is coloured as orange at the leftmost block. Shape is found "Cubes and Ramps" When placing, rotate block like shown. Notice the slanted top face. This is now same orientation as rightmost (bugged one). Block placed. Green and red sides are coloured to better understand orientation. Orange outline shows where the missing top face should be. Additonally, previously working shape in middle also loses "orange" face when placed next to "broken" shapes. And seems that this bug also affects block under the broken one, since as you can see, floor is gone; both visually and physically. It's possible in this case to drop down the roof. Despite roof "missing", space underneath is still considered air-tight; Attached save from creative, but this happens in survival as well. https://1drv.ms/u/c/477358247c3bc88d/Ec8WChoaPTJDrBO6I3253NMBsntF3LLCwNxTEkJOn1mlCA?e=rXeHXe