Can't reproduce (I harvested half the forest lol)
Can confirm
Can confirm
Can confirm
Can confirm
Can confirm
Can confirm. It's one dark line for each the "displayname" and the "numberformat" command argument
When updating the display name ("displayname" argument), the right dark line appears and when updating the number format style ("numberformat styled" argument(s)), the left dark line appears. So they are kind of separate from another
Can confirm
Can confirm
Can confirm but this is a duplicate/addition to https://bugs.mojang.com/browse/MC-277200 & https://bugs.mojang.com/browse/MC-277086