When using sticky pistons with glass panes, when you turn off the lever that activates the pistons, it teleports you behind the pistons.
You can see this happening in the video in this bug report.
MCPE-221089
Random teleporting when using sticky pistons that have glass panes on them
Resolved
Duplicate
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We're tracking this issue in MCPE-165945, so this ticket is being resolved and linked as a duplicate.
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