Bugreported

When I was playing evertech sandbox, I was building a tank with the tracks mod and wheels mod but suddenly, I tried to delete the wheels and it wasn't working so I tried to delete other blocks and it also wasn't working. Was it the mod or the bug? I'm writing this because I do not know where the report button is and I don't have an account so hopefully they fix the bug. The building was around 20 KB or more and was being built. It's big but not small.

Edit: The only way to fix it was to the main menu then back again on save, only 2 wheels were able to be deleted per using the main menu.