An admin who blocks a user partially cannot change the block setting of the blocked user nor block other users, and receives the following message:

You cannot block or unblock other users because you are yourself blocked.

I, User:4nn1l2, partially-blocked User:4nn1l2test (my alternative account) on Test Wiki from editing a page for 2 hours. I also denied them from the ability of sending emails. Now, I myself cannot block other users nor re-block my alternative account.

Reproduction:

1. Go to Test Wiki and make sure you have admin rights.
2. Block a user (you can block mine, User:4nn1l2test) partially (Don't allow the blocked user to send emails).
3. Try to block another user.
4. You will be told "you cannot block or unblock other users because you are yourself blocked. "