During creating or editing a list in the address book, added mail addresses dont show up, instead the greyish box is empty till containing the x.

In the example below, I've added test1@example.com from the address book, which turned into the empty grey box. Selection from the addressbook still works, as shown for the test2 popup. On pressing enter there, it will also turn into an empty grey box.

The not edit view of the list still works and shows the correct addresses, also using the list for mail delivery works as expected. Therefore my guess is, that just the edit list view has a view glitch here. Its still disruptive, as users no longer can use the edit view to remove a certain address from the list.