If you add a banner to a map after adding a named one, the new one will be black even if it is coloured.
Steps:
1. get a map and activate it
2. Rename a banner and place it, then add it to your map
3. place another banner and add it to your map, it will be black
Because of this it is not possible to have 2 coloured named banners.
This bug happens with every colour banner and on every zoom level of a map.
this is my first bug report, so I am sorry if I did it wrong
I made another issue because I'm uncertain if it is related, but I also am getting black markers and the only markers on my map (including all character markers) that aren't black are the banner and a marker for a map I placed in the center before the banner. All of the player markers are black, and I am in multiplayer yet every person's marker continues to exist on the map when they leave the game.