The drawer runners have integrated push-openers, so you don’t need handles or knobs and can open the drawer with just a light push.
The push-open function requires a space between the frame and the drawer front to allow the drawer to be pushed to open. The small gap is necessary to allow this function and is not a product deviation.
IKEA of Sweden
Wipe clean with a damp cloth.
Wipe dry with a clean cloth.
Check regularly that all assembly fastenings are properly tightened and retighten when necessary.