I used doors in one map. On the second map, they are no longer available, items and category. They are not even in the Asset Library even if the prop type is set to 'all'.
Maybe I missed a setting?
edit: doors present, but not available for the old map.
workaround for that map is:
go to layers: stage - rooms- room - doors & windows
select select tool
press on "open door" item from layers tab
now you have access to doors and windows (where the items selection screen is there are doors and windows)