I have 2 accounts, a th4 that is a time killer while builders work away on my th11. Currently, my th11 has all 5 giant bombs upgrading to max but when I visit that base while logged into my th4, it shows all builders sleeping, even though I'm upgrading 5 giant bombs. My accounts are in different clans.

If someone in my th11's clan visits that base, they can see them upgrading. Same with anyone who is attacking/scouting my base and I can see them upgrading while watching a defense replay. Shows builder banging away and builder rope around them.

Not a crucial bug just thought it was worth mentioning. I understand they're traps and normally aren't visible to anyone from another clan visiting, but it was always my understanding that upgrading traps were visible regardless of clan affiliation.