RSS feed fetching ignores network interface binding setting

[ghost]

Please provide the following information

qBittorrent version and Operating System

Versions 4.0.3 and 4.0.4, Windows 8.1 / Server 2012 R2

What is the problem

I have set up qBT to use an OpenVPN interface and additionally set the IP address binding to that interface's address. As a workaround for #5272, I have Windows firewall rules that prevent any qBT traffic via other interfaces.
RSS feed fetching fails with:

The connection to the remote server timed out

If I disable the firewall rule that blocks outgoing traffic via anything other than the tunnel interface, it works. I have also confirmed with Wireshark that qBT does indeed not use the configured interface, but tries the default route.

What is the expected behavior

The RSS fetcher should use the configured interface.

Steps to reproduce

1. Add any working torrent RSS feed and enable feed fetching in the options.
2. Bind qBT to a non-default interface that has internet access (i.e., an appropriate routing table entry), using the first two settings under Options->Advanced.
3. In the feeds list, right-click on the feed and click "Update".

Extra info

Because comments for #5272 suggest that problems with interface binding are due to libtorrent, but RSS fetching is a qBT feature (?), I decided to open a separate issue for this. Without having looked at the code thoroughly, it might be unrelated. I apologize if this is an incorrect assessment.

[FranciscoPombal]

This issue has been closed and locked for being too old, and thus either most likely resolved in recent versions or no longer applicable.
If you experience the reported problem or similar in the latest version, please open a new issue report with the requested information in the issue template.

A new issue report with relevant updated data gathered from the latest version is preferable to necroing an old report with a comment like "still happens in version x.y.z", even if you think the bug is the same, or suspect of a regression. Due to the changes made to the qBittorrent code and its dependencies over time, the exact cause of your problem could be totally different than the original one, despite the visible symptoms of the bug being similar. Thus, providing relevant updated information is crucial to find and fix the root cause of a recurrent problem or regression.

Thank you for your contributions.