While I was building fence I noticed that when you start using hammer as the tool for building frames or walls on the fence the whole structure bugs and you can no longer perform any construction on that said *base* structure. The options: build upper frame, build lower frame, etc. still appear but when your emote for construction is finished it remains only in 1st form, only as a base. I have tried relogging, waiting for server restart and also asked for help from friend and none of those options worked.