In my case 2x 1TB SSD under Big Sur this led to a big problem:

SSD's were partitioned as follows:

• 2x64GB on disk 0 and 1
• 2x936GB on disk 0 and 1

Following this guide I:

• created a 128GB APFS 'system' disk from disk0s2 and disk 1s2 in container disk3

And:

• created a 1.8TB APFS 'data' disk from disk 0s4 and disk 1s4

Either APFS (test) volume created in the disk3 container failed on exactly 50% of disk usage (the physical boundary) with a disk full error. This problem does not occur in JHFS+ In all cases Disk Utility states all is OK

In my case 2x 1TB SSD under Big Sur the above answer led to a big problem:

2 SSD's were partitioned in 4 parts:

• 2x64GB on disk 0 and 1
• 2x936GB on disk 0 and 1

Following the above guide I:

• created a 128GB APFS 'system' disk from disk0s2 and disk 1s2 in container disk3

And:

• created a 1.8TB APFS 'data' disk from disk 0s4 and disk 1s4 using RAID0 that works flawless.

All created APFS (test) volumes in the disk3 container failed on exactly 50% of disk usage (the physical boundary) with a disk full error. This problem does not occur in JHFS+ In all cases Disk Utility states all is OK

The problem occurs in both MacOS 11.6.5 as 12.3 with disk managementd 1934.101.3