Terrace roof on trapezoidal plot

But it just stops right in the middle of the sliding door and is therefore directly in the line of sight from inside to the garden. And that’s what is giving us headaches.

Right in the middle of the sliding door? It's 3 meters away from the sliding door and probably bothers very few people. I don’t know any patio roofing where you can’t see the post from some angle. It belongs there. If it bothers someone, they plant some shrubs, grasses, or something there. Or they put a clematis. Usually, you influence the look by matching the posts or the roofing color harmoniously with the house.

The post should hardly be an obstacle in the view. After all, that is the neighbor's house.

Why don’t you build it the way the planner originally intended? The sliding door is on the right side from the inside. In my opinion, there is no objection to making the purlin longer beyond the support. Roof overhangs in the clearance area don’t seem to be a problem. With 3 *7 m, this can even be done without a building permit.