Remember that only those on Xbox One / Windows 10 / and Android may participate in the Beta builds. You will not be able to join Realms or non-beta players worlds and you will not be able to open worlds opened in the Beta in earlier/current stable builds of Bedrock.
A few changes were released yesterday for those helping to test the BETA before release. Remember to report any bugs if you find them to Mojang.
Stability and Performance
- Fixed a crash that could occur when changing language settings
- Fixed an issue that was causing the Ender Dragon animation to appear jittery (MCPE-105892)
- Fixed a bug that prevented Actors from initializing their animation component