Oversized IKEA Duvet Cover and Lumpy Comforter

I bought a double-sized duvet from IKEA, as well as a 240x220 IKEA duvet cover. The standard is for the duvet cover to be 5 cm larger than the duvet, but this one is far too large. As a result, lumps form inside the duvet on a regular basis. It's become a daily and nightly battle to keep it smooth and comfortable. This experience has been very disheartening, and it is affecting my sleep quality. I'm writing to share my experience and to connect with others who may have had similar issues with IKEA bedding. It's disappointing when a well-known brand, such as IKEA, fails to meet expectations. I hope IKEA addresses this issue and improves product quality so that customers can sleep comfortably and restfully.