I can't speak English.

In single player you can see the item frame in the distance, but in multiplayer(Spigot sever) you can't see the item frame.
If you use a command to fit the map remotely, the map will not be updated only in multiplayer(Spigot sever).

Copy what the player has in his hand to the item frame.
/item replace entity @e[type=item_frame] container.0 from entity @p weapon.mainhand

Loading with the /forceload command has no effect.

Reason for reporting.
I made a command to stand of pin the map, but it doesn't work only in multiplayer(Spigot sever).
I want the item frame and map to work in multiplayer(Spigot sever) over long distances.

postscript
This is a partially modified version of what was once written in the official bug report.