[MCPE-234588] new blocks disappear or become invisible

PS5: In split-screen mode, all new blocks disappear or become invisible as soon as a second player joins the game. This bug affects all add-ons!!!

Linked issues

Please edit your report to change the Affected Version to the version shown on the Minecraft title screen

Please do not choose “Future Update” for the version - we need to know the actual version you are playing as shown on the first Minecraft screen.