3rd/4th split-screen player cannot connect to Bedrock Dedicated Server since 1.26 update (PS5)

Since the Minecraft 1.26 update on PS5, 3-player and 4-player split-screen no longer works when connecting to a Bedrock Dedicated Server. This worked correctly before 1.26.

Steps to reproduce:

1. Connect to a Bedrock Dedicated Server from PS5 with 2 controllers (split-screen) — works fine

2. Add a 3rd controller/player to split-screen and attempt to join the same server — fails with "communication limitations" error

Expected behaviour: 3rd and 4th split-screen players join the server as they did before 1.26.

Actual behaviour: The 3rd player is rejected. The server log shows no connection attempt from the 3rd player at all — the PS5 client is blocking the connection before any packet is sent to the server.

Additional notes:

• Split-screen on local worlds still works fine with 3-4 players

• 3rd player can join as player 1 or 2 without issue — it is specifically the 3rd split-screen slot to an external server that fails

• Server is running with online-mode=false — does not resolve the issue

• Server BDS version 1.26.14.1 on Ubuntu Linux

• This is a regression — was working on 1.21.x