Dick Balaska

Duplicates MC-136494

( I am still on 1.13.2, so cannot comment on newer versions )

Removing a banner does not mark the map data dirty, so it will never be flushed.  If you are working with a fully filled in map this is a problem.  You must perform some other map-altering operation, like put a new banner out or lay some blocks.

If you are working with a partially filled map, it is enough to remove the banner and then wander over to new territory and fill a couple of pixels.

I have spent hours trying to reproduce this issue on a virgin server. I can not. I thought it might have to do with the chunk being unloaded during server restart.

But, it happens consistently on my main survival world. (My map walls are the main feature of my world and I find the stray banners irksome.)

I have the same issue running a 1.13.2 server, not on localhost.

The banner always "shows up" at its last known position, even after removing. (Last known = I had a banner marking my progress on a rail line build. It only shows up at the last place it marked, not all of the intermediate points.)

standing_in_rock_after_exit_minecart.png - This is a different trip down the mineshaft, same location.  Track is at y=5 and I am standing at y=4

Although it happens to me everywhere, here the mine track is at the top of bedrock, y=5.  I ran off the end of the track, came to a stop, and jumped out and landed in a solid block at y=4.  Fortunately, there wasn't lava beneath me this time. I was facing in the direction of travel. It put me behind the cart (west side of the cart).

The y=5 picture shows where I had landed in the stone block just past the bedrock block.

I hang my head in shame. Thank you.