critical backendFailure randomly via AmneziaWG only

[w7rus]

Describe the bug
After connecting, with short delay, client receives critical backendFailure, disconnecting only while using AmneziaWG

To Reproduce
Steps to reproduce the behavior:

1. Go to Main Window
2. Select AmneziaWG protocol
3. Click on Connect
4. Wait for 10-40 seconds
5. Connection drops

Expected behavior
Must not drop the connection

Log files
AmneziaVPN.log
AmneziaVPN-service.log

Desktop:

• OS: Windows 11
• Version 24H2 (OS Build 26100.2605)

Server:

• OS: Ubuntu 22.04

Additional context
Sometimes, connecting once again helps, sometimes need to do 3 connects or more so it stays connected, might connect just from the start.
Tested connecting via XRay - works stable.

I've checked answers in #915, but everything is fine with interface priorities

[ivanmem]

Even 10 reconnections don’t help me - it keeps throwing it out after it happened once. I think this is due to the fact that I periodically switch between OpenVPN and AmneziaVPN.