Bug: Unavailable options not greyed out on phones

I’m having trouble with
We have different product options. In the browser view on computers, unavailable options are greyed out. On the phone all options have the same styling.

Working in
Wix Studio Editor in Dev Mode / Velo

What I’m trying to do
I either want the options to be greyed out on the phone too. Otherwise, maybe it is possible to add a text ‘(unavailable)’ or ‘(out of stock)’ behind the option.

What I’ve tried so far
Googled, looked into the velo documentation. But no luck so far :confused:
I found out that it is related to the Back In Stock Request feature.

Pictures
On the computer:

On the phone: