Indeed, you 're right, in most cases there will be only a few idps on each realm and pagination would be strange.
You see, in all of our cases, we have a large number of IdPs (we also have a modified login theme to be able to serve the WAYF).
Anyway, that's something quite simple to change in the UI, i'll change it.

I updated the code. Now it only shows paging if the actual items are more than 10 in any of the two lists (linked idps, unlinked idps).
So, as you see in the screenshots, in the first case, there's only one linked and only one unlinked, so, there are no paging bars shown.
In the second case, the unlinked idps are more than 10, thus, we utilize the existing paging.

Thanks, so the proposal is good to me, and we'll get someone to review the PR as quickly as we can.

Thanks @stianst
We also have a similar (actually even better) enhancement for the admin console for keycloak setups with a significant number of IdPs per realm.
As you will see, it offers paging in idps listing, following exactly the UI design of the clients paging. Moreover, if you have a few idps (i.e. 10-15), no paging is shown (exactly as in the clients listing page in admin UI).
It is a huge improvement (+scalable) if you have a quite a few Identity providers as we have in our environments.
I think it is a very nice contribution to the community :)
We have created a discussion and a pull request, please take a look whenever you have some time!