Hi @Zafireria it happened after the patch on May 17. These bumps are bumpmap texture (the one that is showing like bumps under the main texture) which is suppose to be the same size as main texture but some creators made it smaller in the past (this way of creating textures was working before). Probably EA has changed the way game processes (renders? sees?) CC items. I believe all creators have to redo their objects changing the size of bumpmap textures to match the sizes of main textures. Recently there was a discussion regarding this issue on Sims4Studio forum. You can read the explanation why did it happen
here.