Sorry to say but after deactivating almost every plugin no change, unfortunately.

First of all thank you for your quick answer. I don't really Know which plugin is the one that triggers that. My installed plugins are : Akismet Ant...

Thanks a lot for your answer. Is there anyway to disable this feature? Or, at least the typed number to become visible?

Thanks again for your answer. It seems that I solved the problem by creating a second admin account to have access to backend. I hope that it stays li...

Hello and thank you for your response. Yes that's the situation.