FWIW, last august 2024, I’ve noticed that I was unable to mount ext4 partitions created by newer Linux distros (older partitions mounted just fine).
In my case at least, managed to narrow it to lack of “journal recovery” support on the Haiku ext4 driver (with Haiku showing on the syslog: "ext2: incompatible features not supported: 2000 (extents 40)"..
Sadly my skills are not good enough to help with improving the ext2/3/4 driver, but maybe a better developer might find it a good fit for their contribution to Haiku.