This issue was discovered when testing MCPE-160998.

Previously when you looked in a specific direction and then crossed a nether portal the camera moved in one direction, whereas now you no longer look in the same direction as before.

Analysis

1.19.2

The player camera	nether	overworld
1.19.2 (north in nether).mp4 looking	north	east
1.19.2 (south in nether).mp4 looking	south	west

1.19.10

The player camera	nether	overworld
1.19.10 (north in nether).mp4 looking	north	west
1.19.10 (south in nether).mp4 looking	south	east

how we can see this changed between versions,also
in Java edition was similar until 1.19.2 while in 1.19.10 it is not anymore

Steps to Reproduce:

1. Open Camera bug.mcworld
2. Cross the portal looking south or north
3. Use the locate map to see where you are looking east or west

Expected result:
When you look north in the nether and then when you cross the portal, you will see that in the overworld you will look east.Or you look south in the nether and then when you cross the portal, you will see that in the overworld you will look west.

Observed Results:
When you look north in the nether and then when you cross the portal, you will see that in the overworld you will look west.Or you look south in the nether and then when you cross the portal, you will see that in the overworld you will look east.