when i put the end_crystal in the end, the bedrock in 0, 0,(like this video), the end_portal is gone

please watch this video, maybe it is a bug.
(maybe it is not Influential 1.19.0)
My version of the game is 1.18.31 the viedo's minecraft version is 1.18.31
it is not 1.19.0
(because when i choose the version it isn't have 1.18.31,only have 1.19.0.-
information:Minecraft, MCPE Android 10, 1.18.31.