Creative Mode Can take damage after switching gamemodes ( the gamemode switch is broken/ doesnt work.)
When I created a new world in creative, I immediately left the world and clicked the pencil and switched the gamemode to survival. When I entered the world again, I fell off a cliff and died, while in creative mode.
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Added duplicates link: MCPE-8194GameMode Switch Button BugFixed
Resolution: Unresolved → Duplicate

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This issue was reported previously as
MCPE-8194; comment your experience there!