Bathroom tiles

They used porcelain tiles for the shower and floor. Not glazed. Are there any ramifications/issues?
Thank you in advance

Performance of unglazed ceramic and porcelain tile
Unglazed tiles tend to be denser and thicker than glazed tiles, and because of their unfinished exteriors, they tend to be a great choice if you’re looking for a slip resistant surface in an area like a laundry room or kitchen where the tile is likely to be subjected to high amounts of moisture. In terms of safety, this is a big consideration. For areas with heavy foot traffic, as well as outdoor applications (in milder climates), unglazed tiles are a very good choice.

Along with safety benefits, unglazed ceramic and porcelain tiles are sought after because of their scratch resistance and natural beauty. Since they’re colored by the mineral deposits from where the clay was originally taken, these tiles offer an earthy aesthetic quality. A limitation of unglazed ceramic and porcelain is their vulnerability to staining. As a precaution, it’s a good idea to use a sealant and a wax after installing unglazed ceramic tile indoors.

what He said…

No, only harder to clean when not glazed. Preferred for floor tile, but not shower wall tile. The tile installer looks like he knows what he is doing, except for one issue. I don’t see any seam fill on the backer board.

Agree best practice is to tape and fill seams and corners and apply a water proof coating to the backer board