nextcloud / nextcloud/desktop

[Bug]: NextCloud Client 33.0.x (up to 33.0.5) problem with Sync and explorer

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Description

### ⚠️ This issue respects the following points: ⚠️

- [x] This is a **bug**, not a question or a configuration/webserver/proxy issue.
- [x] This issue is **not** already reported on [Github](https://github.com/nextcloud/server/issues?q=is%3Aopen+is%3Aissue+label%3Abug) OR [Nextcloud Community Forum](https://help.nextcloud.com/) _(I've searched it)_.
- [x] Nextcloud Server **is** up to date. See [Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) for supported versions.
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).

### Bug description

Hello,
while using client version 33.0.X, we have encountered several issues related to synchronization and Windows 11 File Explorer freezing.
After installation, the client initially works without any issues. However, during synchronization, it randomly goes offline and loses connection, preventing proper synchronization of files uploaded to the cloud.
Additionally, when attempting to browse files through Windows 11 File Explorer, the system freezes completely, and it is necessary to restart File Explorer to restore normal functionality.
We have tested all versions of the 33.0.X client with both a 1 TB cloud and a 30 TB cloud, and the same issues occur in both scenarios.

### Steps to reproduce

1.Install client version 33.0.X on a Windows 11 machine.
2.Complete the initial setup and start file synchronization.
3.Allow the client to run and sync data with the cloud.
4.After some time (random behavior), observe the client status.
5.Try to browse synchronized files using Windows 11 File Explorer.

### Expected behavior

The client should remain online and connected.
Files should synchronize correctly with the cloud.
File Explorer should remain responsive while browsing files.

### Nextcloud Server version

33

### Operating system

Debian/Ubuntu

### PHP engine version

PHP 8.3

### Web server

Apache (supported)

### Database engine version

MariaDB

### Is this bug present after an update or on a fresh install?

Fresh Nextcloud Server install

### Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

### What user-backends are you using?

- [ ] Default user-backend _(database)_
- [ ] LDAP/ Active Directory
- [x] SSO - SAML
- [ ] Other

### Configuration report

```json
{
"system": {
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"ws.gruppoebano.com"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "33.0.2.2",
"overwrite.cli.url": "http:\/\/ws.gruppoebano.com",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"instanceid": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"maintenance": false,
"maintenance_window_start": 1,
"check_data_directory_permissions": false,
"serverid": 0,
"default_phone_region": "IT",
"memcache.local": "\\OC\\Memcache\\APCu",
"memcache.distributed": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 6379
}
}
}
```

### List of activated Apps

```shell

```

### Nextcloud Signing status

```shell

```

### Nextcloud Logs

```json

```

### Additional info

_No response_

Contributor guide

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