Dragging labels to folders does nothing

When I drag a label to a folder, I see “Apply label ___ to paper(s)”, but nothing actually happens. The problem isn’t specific to any folder or label. Has anyone else seen this?

It’s not possible to drag a label directly on a folder. The visual feedback might be not clear hear. To Apply a label to a complete folder select the folder, click “Select all”, and then either use the “Label” button in the toolbar or drag a label on the selected items.

Okay thanks. Tooltip was definitely misleading.