Another button refers to the metadata in the sidebar next to the image. The metadata of the current structure element is displayed here. Thus a title, author etc. is always visible for a journal article. Previously, it was not possible to display metadata from the main element at this point. With the new switch
topstructValueFallback="true" this is now different. This means, for example, that the signature can always be displayed in the sidebar of a manuscript - independent of the selected structural element.