ᐅ How can you check for issues with Malm furniture before purchasing?

Hello everyone, I am currently planning to buy an IKEA Malm desk but have often heard about issues with stability, workmanship, and the furniture panels. My question is: How can I specifically check when purchasing if my Malm piece is affected by common problems such as uneven finishing, crooked edges, boards that appear damaged or worn, or unstable connections? What should I pay attention to during an on-site inspection to avoid unpleasant surprises at home and unnecessary returns? Are there specific tests, practical tips, or visible indicators that should not be overlooked? Thanks for your advice!