Error when signing into Microsoft Account

[Oughie]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Open Minecraft via mcpelauncher
2. Press Sign In
3. An error pops up (Error Code: "Drowned")

Expected behavior
Logging into my Microsoft Account by typing my credentials.

Screenshots

Desktop (please complete the following information):

• OS: Nixos Warbler (Kernel: 6.14.2)
• Version app/io.mrarm.mcpelauncher/x86_64/stable: v1.2.3
• Installation Type flatpak

Additional context
I tried enabling Remote Connect in the account settings (as a workaround), then restarting Minecraft and pressing the Sign In button again, yet the same error shows up.
On my mobile device, I tried this workaround as well to see if it actually, and there, it indeed worked: It gave me the login code and didn't show me the "Drowned" error again.
The deprecated AppImage on the other hand works fine for me, using remote connect.