Issue in product image variants

[Parth-Joshi]

I have an issue in Spree product image variants in product details page.

My Setup versions:

Rails version: 6.0.3.2
Ruby version: ruby 2.7.1p83

spree (4.1.7)
spree_api (= 4.1.7)
spree_backend (= 4.1.7)
spree_cmd (= 4.1.7)
spree_core (= 4.1.7)
spree_frontend (= 4.1.7)
spree_sample (= 4.1.7)

I have taxon as categories -> women -> skirts and one product named Flared Midi Skirt with 3 variants as below:

When i upload 3 images to all variants as below then its working fine:

and all 3 images are shown for all variants as below:

Now, if i change variant of image 3 to color black as below:

then the issue is that no image appears in color red for any size selected/unselected even though we have 2 images attached to all variants as below:

and only image 3 is shown when black color is selected a below:

So, as per my understanding, image 1 and 2 should appear in all 3 variants and image 3 should be added in color black variant.

Second try: If i attach image 2 to variant with color red and size S as below:

then no image appears on any color(red/black) or any size even we select it or not in product detail page as below:

There is no error in browser console as well as in rails logs.
So, Have i misunderstood variant and images concept or is there an issue ?