Offline multiplayer not working on 1.20.10 onwards

Before version 1.20.10 I could play with my friends in a LAN game connected to the same signal without internet and we could play fine but in version 1.20.10+ this function doesn't work and I can't play with my friends anymore since when connecting to the same network without internet we can't connect fix this since since I played Minecraft from 1.16 it worked and now it doesn't
New:Still not working on 1.20.15 please fix this bug

Edit:The offline mode still doesn't work, could you fix it?