problem with HTTP Auth in FF47

[Bond246]

Hello, hopefully the problem is not inside another issue. Since i'm using FF47 i'm noticing problems with some pages that uses HTTP Auth. For example this one http://www.dvbviewer.com/de/index.php If i'm clicking on "Mitgliederbereich" on top, KeePassHttp gives a notification that some credentials where requested but Firefox stays on the previous page and the pageload is pending.

Auto fill HTTP Auth is deactived. I've just activated Automatically retrieve credentials and Activate autocomplete for username fields. Deactivating them don't solves the problem. To access these pages i have to change the browser or to deactivate the KeeHTTP-Plugin in Firefox.