game resolution size changes the first person arm position but not a held item's position

Partner Rank: 3

Verification builds:
1.20.0 | Windows: Fullscreen: NO, windowed: YES
Retail (1.19.41) | iOS(4:3):YES
R/19_U4 – Release | PS4: NO
R/19_U4 – Release | iOS (4:3): YES
R/19_U4 – Release | iOS (16:9): NO
R/19_U4 – Release | iOS (19,5:9): NO
R/19_U4 – Release | Android (4:3): YES
R/19_U4 – Release | Android (16:9): NO
R/19_U4 – Release | Android (19,5:9): NO

Impact:
Visual bug in vanilla, batman and future content
 
Repro Steps:

on a windows PC: 

1. Open any world in creative
2. Get a map from the creative menu and hold it in first person
3. Resize the window 
4. Squish the window size horizontally
5. Observe the map moving out of the hand and off to the left

Observed Results:
The map (or any custom attachable where the arm is rendered) moves away from the hand in non 16:9 resolutions

Expected Results:
The map and any other item stays in the rendered hand when the window is resized

Screenshots/Videos attached: Yes

Regression Build:
unknown