Only one-directed connection of the portal MC 1.18.1

[timyliniger]

Information

• Server version:
  Paper 1.18.1 (git-paper-81) with MC-Version: 1.18.1

• Full output of /mv version -p:
  https://paste.gg/p/anonymous/e5eb2e811fa8468389f3c92d6b661989

• Server log:
  https://pastebin.com/Db193Z8G

Help request

Problem
Only one-directed connection of the portal: After building and activating the portal in the main world (KSR-SMP), the access to the nether does not work (KSR-SMP_nether). When I teleport to the Nether with mvtp, I can use the portal to return to the main world. Also an explicit linking of the two worlds does not work (mvnp link nether KSR-SMP KSR-SMP_nether). Unfortunately I get the same error in other worlds I created with "mv create" (i.e. KSR-Temp -> see logs). Unfortunately, when I jump into the portal, nothing happens. I'm not sure if it's the same error as #244. I tried with snapshot 4.2.2 - unfortunately unsuccessful. Also the bidirectional linking has brought no success (mvnp link nether KSR-SMP KSR-SMP_nether && mvnp link nether KSR-SMP_nether KSR-SMP).

What I have tried
Create a world "X" and its nether ("X_nether") with mv create.
Create a nether-portal.
Go through the portal

Expected behavior
Arrive at it's nether (X_nether)

Screenshots
https://imgur.com/a/UjVK5rk

[Silvigarabis]

I have a similar situation in Paper 1.19.

I have the following world on my server,
and it has been loaded to the server.

Mainland normal
Island normal
Island_nether nether
Island_the_end the_end

Among them, I specified level-name=Mainland in "server.properties"

I have Muitlverse-Core, and Multiverse-Netherportals installed on the server, using the default configuration.
When I tried to enter Island_nether from Island through the nether portal, I stopped there and was not teleported.
However, when I go through the portal from Island_nether, it successfully takes me to Island

I created another world called Mainland_nether. At this time, a miracle happened. Mainland's portal takes me to Mainland_nether, which is the expected result. But, Island's portal can bring me to Island_nether now.

So I think it's a bug

But there is a workaround for this bug, which is to create a world with "_nether" suffix for the world with ID "minecraft:overworld", which for you should be a world named "KSR-CB_nether". Alternatively, rename your "KSR-CB-Nether" world to it.

[Silvigarabis]

I found a note about this bug, see issues#229

It states that the default leval must link to a nether world