I know there are a lot of closed similar issues. I tried really hard to find one similar to this.

Expectation:

Any server that can be connected to directly shows up on my friends list when a friend is playing on it.

Current behavior:

Friends on BDS don't show up on the friend list as playing/joinable.

Steps to reproduce:

• Verify device is capable of joining BDS by joining BDS directly via hostname or IP address
• Verify device is capable of seeing friend in friend list by having friend host a game using their Minecraft app (not-BDS but Bedrock edition)
• Have friend join BDS
• View friend list and see friend not-appear when they were appearing previously

Test Environment:

• BDS 1.14.32.1 on Windows 10
• Friend on Windows 10 or Android
• Self on Windows 10 or Android

Tested:

• (failed) Friend on Windows on BDS on LAN
• (failed) Friend on Windows on BDS on WAN
• (failed) Friend on Android on BDS on LAN
• (failed) Friend on Android on BDS on WAN

I hope that's helpful.  I suspect this is actually an undocumented feature of Alpha-BDS, but I hope it's just a bug.