I went to check my seeded glass, wondering if it had black bubbles that I'd missed. Nope. All clear.

I'm commenting to bump your post in hopes that some pros will join in.

That doesn’t look right.

Did you take photos of the seeded glass sample cabinets when you ordered them? If what you received is different from the sample cabinets, you may have recourse. Did you stop installation? Were you there to inspect the cabinetry when it was delivered?
A good part of the buyer’s responsibility is to verify that you received what you ordered.
The glass you show would be unacceptable to me. I’m sure that replacing the ugly glass will be time-consuming, but if what you received doesn’t look like the samples, the company should replace the glass.

I agree that you are not being picky and (unfortunately) are going to have to try get it replaced - so sorry that happened, how frustrating!

That glass is defective. The seeded drop may be a bit opaque but should be clear for the most part. Surprised they did not notice when cutting the glass.

Phew, thank you all for the sanity check! I was afraid I was being a psycho perfectionist. The cabinets were delivered yesterday and this one is sitting on my couch. I'll be checking the others in a sec. 

Cabinet quality is a real problem right now. My newly-installed Kemper cabinets w/Storm stain were poorly finished. All doors and drawer fronts are being replaced. I was worried about the painted Schrock cabinets (same manufacturer), but so far the finish is good other than a hastily painted ding that won't be seen. I sure never expected an issue with the glass, though!

I have seen seedy glass looking similar to that in the past, but that doesn't make it acceptable. As others pointed out, the bubbles may be opaque but should not look black, That appears to be some sort of batch contamination.

Is the glass held in by clips on the inside of the cabinet door? If clips replacement should be easy and fast.

Probably a lower quality product due to sourcing from lesser quality vendors and/or being produced with lower quality raw materials. Common issues during the covid era.

"Is the glass held in by clips on the inside of the cabinet door? If clips replacement should be easy and fast."

Yep, should either be glaziers push points or possible a little plastic half-turn button if memory serves me.

I'm with the majority here: I love seeded glass, but this isn't what I picture when you say the term.

A second door had slightly less awful black marks, and a center cabinet with 2 glass doors says the glass has been back-ordered. Ha! Maybe I got the bad leftover stufd in the shop! I reached out to the kitchen store to let them know I need replacements.

Is it "in the glass" or is it something on the surface that can be cleaned? The seeded glass we show does not have any black on it. Sorry

The marks are in the glass, though some can be felt on the backside. Some feel like scratches but I can't clean anything out of those area. Fortunately, the glass IS nicely installed and easy to remove, which will be helpful.

@Charlene Smith-Fadden, funny you posted the cleaning observation. When I went to check my glass after seeing your photo, I was horrified to see a black "seed". I reached out instinctively to touch it and took the spot off with my finger. I just washed the glass last week for my book club meeting, I swear. You can feel the texture of the glass seeds, but they normally stay put!