The bug

Despite being visually transparent, the third person camera does not pass through glass. This is something that became possible in Java Edition 1.16, making this a parity issue.

How to reproduce

1. Approach glass
2. Face the glass while being very close to it
3. Switch to third person front view

Expected results

The camera would be positioned inside of or behind the glass.

Actual results

The glass is handled as a full solid cube and blocks the camera from going behind it.