I have this issue in my world too, version 1.14.30, Win10 platform.
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The losing chunks are not exactly the same each time I come back from Nether to OW. The invisible zone usually has an extension of about 20/30 chunks and it seems to be always between the coordinates x:50-350 and z:50-350. My friends who join this world are often affected by the same problem, maybe one or two of us can see the chunks correctly and others can't.
Sometimes returning to the Nether portal and entering the OW again can help re-loading these chunks. If it doesn't work, we have to exit the game and reconnect.
I have just created a new single-player infinite world from random seed to test this issue, with render distance 8 chunks. The problem persists in another area with different coordinates.
Trixyz
I have this issue in my world too, version 1.14.30, Win10 platform.
The losing chunks are not exactly the same each time I come back from Nether to OW. The invisible zone usually has an extension of about 20/30 chunks and it seems to be always between the coordinates x:50-350 and z:50-350. My friends who join this world are often affected by the same problem, maybe one or two of us can see the chunks correctly and others can't.
Sometimes returning to the Nether portal and entering the OW again can help re-loading these chunks. If it doesn't work, we have to exit the game and reconnect.
I have just created a new single-player infinite world from random seed to test this issue, with render distance 8 chunks. The problem persists in another area with different coordinates.