Steps to replicate (not 100% consistent, only sometimes happens):
Pause game
Move your mouse cursor
Unpause the game using the escape key (using the Resume Game button will make the camera never move when unpausing, as far as i know)
Your camera should sometimes move slightly
This report is a duplicate of MCPE-227945, however that bug report was closed in error. The bug has not been fixed in 26.0, and is still prevalent.
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