Cosmetics not showing

[Sometime cosmetics doesn't show even after i download all the resources and load them and the only solution for this is to clear data Minecraft which always removes all my mods and skins and I have to download them again so please solve this issue]

Steps to Reproduce:

1. [Step 1]
2. [Step 2]
3. [Step 3]

Observed Results:

Cosmetics doesn't show

Expected Results:
Cosmetics should show after i load them

Screenshots/Videos attached: [please attach an image or short video]

Notes: