Cracked calcium silicate brick installed

Hello forum. I ask you for help. During today's site inspection, I noticed that a defective (cracked) sand-lime brick was installed. The crack is visible from both sides and was only filled with white adhesive. Is this professionally correct or should we insist on replacing this defective brick? Thanks in advance.

That doesn't harm anything in my opinion.

Exactly. Completely irrelevant.

Thank you for the answers. Is [Kalksandstand] really so brittle? My concern was that the cracked stone is not so load-bearing, but I am a layperson. So it can be left as is, right?

Brittle not at all, this is already a mechanically caused damage, but really not bad,

Is this professionally correct

Yes.

or should we insist on replacing this defective stone?

Masonry stones are not tiles, and this is not about facing masonry.

So it can be left as is, right?

Exactly.