WowAce

I set up a theme for 5mans. under general -> layout editor if I set it to 5 columns and 1 unit/column, I end up with a vertical group instead of a horizontal group. I think that's backwards? If I switch it to 1 col and 5 units/col I get a horizontal group. I am not sure what's intended, but was reporting as a potential bug.

Working as intended, you can switch horizontal/vertical groups going to Themes -> Default (or another theme) -> General -> Horizontal Groups.

 if you setup 5 columns and 1 unit/column, you do not get an horizontal group, you get 5 vertical groups (each group with only 1 unit), a column is a group.

The standard configuration is to setup 1 column with 5 units per column, not 5 columns with 1 unit per colum, then you can switch between vertical or horizontal columns/groups changing the "Horizontal Groups" toggle (toggle that converts the columns in rows).

You don't need to use the layout editor to switch from horizontal to vertical groups,  only on rare cases is necessary to use the layout editor to create custom layouts.