I go in the nether portal and I sometimes get randomly teleported somewhere random in the nether without the nether portal

I believe this is MCPE-115933, which should be fixed in 1.17.10. Could you please check that your game is updated to 1.17.10?

Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.

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