Omega b rear wheels stand differently after repair

Hello, with my Omega b Caravan 2.0 16V Bj 99 a disagreement occurred after a repair. Among other things, the rear axle bushings were changed and the brake discs and brake blocks were renewed at the back. Then the track was adjusted. Now the left wheel is visible further than the right. So the right is right as before, the left is wrong, estimated 2-3cm further inside. Track and fall were checked again, right. I have 20mm track spread on both sides In the first place, I thought they didn’t screw the track plate on the left, but it’s on it. Rims with the same tyre sizes and track plates were installed just like that before the workshop visit, so that the inconsistency can only come from the repair, something must have been built wrongly together. After several resultless tours of the workshop(the masters always said clearly that the left wheel is definitely further in and that so not se in) and demand from Opel, who also didn’t know any advice (only the statement that you can’t pretend anything that leads to this result), I hope now for your help! What can this be about? The pictures show the misery.