Dimension portal Bug

Issue description

So, I'm updating my mod when I have time to kill, and when MCreator got the 1.15.2 compatibility I made a big update for my mod and added a dimension too. The problem here is that:

When entering the dimension, you will be around the same coor', logic, BUT it can be into a wall, in mid-air, etc... and the portal will never spawn at your position, it will randomly spawn in the dimension open space(I did a nether with a custom biome) that is the nearest to you, so to return to like your house(asuming you made the portal in your house, you need to recreate a portal where you spawn in the dimension(hope It's clear). And also, every time you get in the dimension it create other portals into it.

(I took 6 screenshots, so, opened paint.net and made one image out of the 6, tell me if the quality is good or not.)

Issue comments

I can confirm there are problems with portals I am working on but was not able to find a clear resolution yet.

It's nothing, just, say it when it will be resolved ^w^

I can't say when as I was not able to find a solution yet ;)

No, when you will resolve it, say it somewhere x)

I will announce it here and in the changelog as it is done with all tickets

And also, every time you get in the dimension it create other portals into it.

I could not reproduce this part. Could you provide an example workspace that has this bug?

I could reproduce wrong positioning, however.

Am gonna send you the workshop of my mod, Portal is made of "Blue Mountain Dirt" and there is a "Blue Cave Igniter" and then you will see. https://www.mediafire.com/file/a9moht5vsxrdsiq/undersource.zip/file

Please export workspace using File -> Export to JAR so the file is not that big

Oh ok

I can give you the mod's jar but there is no "Export to JAR" in "File", I can only export it into a .zip

Oh wait

https://www.mediafire.com/file/3hzts5r36bcl1jn/UndersourceZip.zip/file

Thanks, I will check it.

it seems like the dimension bug only happens when you first load in the dimensions once you go back in through the portal and go back in the bug seems to go away

Yes, I noticed this too. Thanks for the info!

have you found a solution yet?

I would let you know if I did. Feel free to play with code yourself, you might find the cause ;)

After around 20 hours of testing in total spent on this ticket, I finally found a solution.

This will be fixed in 2020.4 alongside portals now working faster and supporting the teleportation of any entity type in 1.15.2.

[Bugfix #61924, FG 1.15.2] Player spawned outside custom dimension portal sometimes, portals could duplicate

yay :D

https://twitter.com/PyloDEV/status/1271428178884640768

Another bug with dimensions, if you use normal grass in a custom biome, sometimes, the grass color is normal and not with the biome color when you enter the dimension

This would be a MC bug I can't control, there is no line in code controlling rendering of grass in dimensions