How to fix particle board at lock screw (Ikea Effektiv)
I'm with Lawrence on this, where there is blame, there is a claim. If you want to have a go at fixing however then go to a ships chandler and get a good glue from them. However, the trick is to clamp the pieces tight. I don't mean but some books on it but use something that has a vice-like grip spread over 3 or 4 inches. All that said, if this is an area not seen when draws/doors are closed then "No-Nails" type compound will suffice. Good luck