Some NextCloud synced files get corrupted


our users are facing problems with files that are synced using NextCloud and local client program, some of files get corrupted.

NextClient desktop version: 3.9.3
Operating system: Linux 5.15.0-72-generic #79-Ubuntu SMP Wed Apr 19 08:22:18 UTC 2023 x86_64
Webserver: Apache (fpm-fcgi)
Database: mysql 8.0.34
PHP version: 8.1.20

Modules loaded: Core, date, libxml, openssl, pcre, zlib, bcmath, bz2, ctype, curl, dom, hash, fileinfo, filter, ftp, gd, gmp, json, iconv, intl, SPL, ldap, mbstring, pcntl, PDO, session, posix, Reflection, standard, SimpleXML, mysqlnd, exif, sysvsem, tokenizer, xml, xmlreader, xmlwriter, zip, pdo_mysql, cgi-fcgi, redis, Zend OPcache

Nextcloud version: 26.0.4 -

I don’t see any errors in nextcloud.log file.

I can also provide a sample of corrupted file.

Any idea why this is happening?

Thank you!