Some merged plot markers render weird

Server Implementation

Paper

Server Version

1.17.1

Describe the bug

As you can see on my map https://map.ofunny.world/citybuild (switched to Squaremap) some merged plots render sub markers in shape of the road in between them or in shape of old single plots (before the merge).
While PS works fine, I also checked the data in my MySql database what also seems to be valid.
So I guess there is something wrong with Plot2Dynmap.

Note: I'm using LiveAtlas to display Dynmap but I also tested it with the original Dynmap web interface, same result.

To Reproduce

1. Open https://map.ofunny.world/citybuild (switched to Squaremap)
2. Scroll out a little bit
3. Compare the markers of the merged plots (one is correct, two are weird)

Expected behaviour

Rendering merged plots as one marker only.

Screenshots / Videos

Error log (if applicable)

No errors appear in the log

Plot Debugpaste

https://athion.net/ISPaster/paste/view/07db609057d3425b85fddd97d85b3438

Plot2Dynmap Version

Plot2Dynmap 6.0.1

Checklist

• I have included a Plot debugpaste.
• I am using the newest build from https://www.spigotmc.org/resources/1292/ and the issue still persists.

Anything else?

No response

No source file or test is named. Start by reviewing the Plot debugpaste and reproducing the merged-plot markers with Plot2Dynmap 6.0.1, PlotSquared, and Dynmap; compare the result with the MySQL data. Done means merged plots render as one marker without road-shaped or outdated sub-markers.