LrC doesn't import photos from memory card where preview wasn't loaded yet

In the latest Version of LrC 15.5, the import does not import images where previews are not yet loaded in import dialog. This behavior is different to previews versions, where no matter whether a preview was loaded, an images was imported. As I do not use the import dialog to (pre-) select images, I used to click on “Import” as soon as the button was active. For memory cards with thousands of pictures, waiting for all previews to be loaded makes not much of a sense and when clicking import, only importing those with a preview loaded is a misleading functionality. I’ve verified this new behavior 3 times with different memory cards from different cameras.