[Edit: continuation of this post]
Yes, it happened as I was expecting. I did not use slice, but form the part, and use base face split with mesh control.
The results are the same, I have a peak of stress, and I do not know why. In the Eurocode this connection has Mrd = 100kNm.
With the model Mrd is under 30kNm. There is something wrong in the model. I think that it is impossible to be the weld. As you see, the results are completely different from your model. Really, I don't know where is the problem with the model. If I take the element results, ts the picture below:
If I take probe, in the node of the element before, the results are in the picture below. As you, see, completely different, nearer of the reality, but not reliable.
Just a moment, I will attach the model which is solved.