[material-ui][Rating] `arrowUp` and `arrowDown` are reversed

[michelengelen]

Steps to reproduce

Link to live example: Basic Rating

Steps:

1. tab into the rating
2. press arrow up/down
3. value setting is reversed

Current behavior

arrowUp decreases value
arrowDown increases value

Expected behavior

arrowUp increases value
arrowDown decreases value

Context

No response

Your environment

No response

Search keywords: rating arrow up down value

[KirankumarAmbati]

Is it by design that Rating component behaves this way? Below ones are also working same as material UI:
Uber: https://baseweb.design/components/rating/
Ebay: https://opensource.ebay.com/mindpatterns/input/star-rating/

Arrow Left & Right is functioning correctly for all 3 components, including material UI.

[michelengelen]

OK, maybe it is intended behavior ... it just feels so wrong to hit the arrow down key and the value going up!

[KirankumarAmbati]

OK, maybe it is intended behavior ... it just feels so wrong to hit the arrow down key and the value going up!

Agreed.

[mapache-salvaje]

As far as I know this is intended behavior. From an a11y perspective I think it would be even more strange if they were reversed from the existing implementation.