Only one out of several A-records updated

I have 3 A-records:, all pointing to the same IPv4-Adress.

An update with
only updates to the new IPv4 address, the other ones are not updated and render two servers in my net unreachable.
After editing the records manually in the web form, the servers are reachable again.
Is this a malfunction, is it my mistake (and how should it be done) or maybe I didn’t understand the concept correctly? Thanks for your suggestions.