On java edition in the nether update it was made that the camera in 3rd person view can pass through glass, glass panes and iron bars. MC-175866 This change hasn’t been made to bedrock.
How to reproduce:
Build a wall made out of glass
Get very close to it
Look at it
Press F5 twice
❌ The camera will be very close to you because of the glass.
Expected behavior: The camera will be behind the wall out of glass.
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It's still affecting 1.16.200.57

Iron bars should be removed because it's a bug in Java: MC-183536

The java ticket hasn't been triaged yet, meaning it is not confirmed to be a bug. That ticket is very likely to be intended. I am not going to remove them from this report.

You're correct.

The camera also cannot pass through barriers (MCPE-128597)
Affects 1.16.200.56 Beta