qBittorrent-nox WebUI unresponsive after a few days of uptime.

[whoodini]

qBittorrent & operating system versions

qBitorrent-nox 4.4.4 Web UI 64bit official build.
Ubuntu 22.04.1 LTS

What is the problem?

Every few days (3-5) of uptime the qBitorrent-nox Web UI is no longer responding.
When I log into the machine via SSH, the qBitorrent-nox process is running but it seem to have gathered a lot of memory.
A service restart fixes this problem without any issue.
dmesg and journalctl contain no information pertaining to qBittorrent.
HOST OS seems to be unaffected by this issue.

HOST: i5-7500, 12GB, SSD and lot of HDDs.
OS: Windows 10 PRO 21H2 with HyperV role.
VM: Ubuntu 22.04.1 LTS, 4 vCores, 6GB RAM
~2k torrents from one private tracker, a few from another private tracker and some public trackers.

Steps to reproduce

1. let it run for a while and gather some 2k+ of torrents.
2. do only weekly or every two weeks or even monthly restarts.

Additional context

No response

Log(s) & preferences file(s)

Parsing through log files revealed no new information, except x and y torrent has been restored.

qBittorrent.conf.txt

[inga-lovinde]

Also reproduces on various 4.5.0 builds from unstable PPA, up to the beginning of October at least.

[Piccirello]

Potentially related to #21618

[inga-lovinde]

I should have also mentioned that I haven't seen this problem on 4.5.5, maybe on earlier builds too, it just went away at some point after some upgrade.