More Recent Sears Dress Shirt - Type of Defect in Sleeve Fabric?

Here is an example of a more recent Sears shirt as the main tag is marked "China".

It was found still attached to a fiberboard insert with pins.

This site may add the tag to its reference section of Sears tags if it wishes to.

About half way down the length of one sleeve is a 1 5/8" long vertical area where the weave is slightly wider than normal for 1 1/8", with the top 3/8" being 1/16" wide.

Would this be regarded as a defect?

If so, what would be the technical name for it?

It didn't seem to exactly match any of the picture references I found online for defects, some of which are little hard to compare as they are line drawings rather than photos.

 

Fabric slub.
You might be able to pull the large bit at the end to the wrong side.

 

I would just say that this is part of the weaving process and wouldn't consider it a defect at all.