Ext4 file system issues with OpenWrt and APU2 boards

Dear all,
I'm writing as, since some time, I'm experiencing some issue with OpenWrt, using images with the ext4 filesystem.
I'm currently using OpenWrt 21.02.1 with several APU2 boards (with different hardware revisions, ranging from APU2C4 to APU2E4).

Sometimes (luckily quite sporadically) I experience some weird mSATA SSD file system errors (even with new mSATA drives, which seems to point to a software problem, and not to a real hardware issue). They make the OpenWrt file system to be mounted as read-only, making the APU boards more or less unusable.
The only solution I found to this problem, when it occurs, is to either flash again the SSD with a clean OpenWrt image (this usually definitely solves the problem, even if in one case it occurred again after a few months), or to run e2fsck /dev/sda2.

The error which occurs is the following:

$ dmesg
[   44.237670] EXT4-fs error (device sda2): ext4_mb_generate_buddy:747: group 9, block bitmap and bg descriptor inconsistent: 31907 vs 31908 free clusters
[   44.252849] EXT4-fs (sda2): Remounting filesystem read-only
[   44.259049] EXT4-fs (sda2): ext4_writepages: jbd2_start: 9223372036854775806 pages, ino 73739; err -30
[  317.215962] EXT4-fs (sda2): error count since last fsck: 5
[  317.221505] EXT4-fs (sda2): initial error at time 1683037316: ext4_mb_generate_buddy:747
[  317.229649] EXT4-fs (sda2): last error at time 1683129706: ext4_mb_generate_buddy:747

Do you know what could be causing it, considering that it happened on multiple SSDs, even quite new?
A few times it happened after many months of usage, some others after a few weeks, and, in many cases, with the same setup, it never happened.

Thank you very much in advance.

What's the frequency of those errors?

I've been running 22.03 ext4 on a msata drive since it was released, using a Roqos RC10, without any errors whatsoever.

It seems to be very random. With exactly the same OpenWrt version and setup (and different models/sizes of mSATA SSDs), sometimes (actually, most of the times) it never happens, sometimes after several months, and once it happened after some weeks.