Damage to a gable peak

That probably looks adventurous, but: building a house is not precision mechanics, but gross motor skills. The target and the actual state are never congruent. This also existed back when no bored builders (or, in the case of developers, you have to say: homebuyers) were roaming the construction sites with their smartphone cameras to supposedly document frightening norm violations. In every house, there is something not textbook-perfect in some corner. No drama.

Well, these are just several small pieces of the material. That little bit of mortar won't be decisive up there.

The "bisserl Mörtel" is already in an unusually "balanced" stone-joint ratio, especially in contrast to the plan blocks of the rest of the wall. It somewhat reminds one of a cake with ladyfingers. Maybe the mason wanted to hint at the kind of catering he would have liked :)

That's nonsense, after the roof truss is finished, additional masonry will also be done there.....

In my opinion, it is not particularly well built. It needs to be checked whether
- the correct stone was used (sand-lime brick?)
- the joint widths (horizontal and vertical) are permissible (processing guidelines of the stone manufacturer)?
- the window installer can mount their window (my assumption, in any case, the vertical right side of the built-up triangle somehow also looks "holey").

Please also take photos from the scaffolding with a scale (tape measure) in the picture. Do you have site supervision, quality control, or an expert on your side?

Oh, by the way, with us, planed stones were also used for masonry and sometimes had to be patched up (parapet heights were wrong). However, it looked much cleaner than in the picture shown in #1.

Dear people, don't always talk such nonsense when you have no idea, they still worked on it when the roof truss was erected,