We have a corner window with a silicone join where the 2 glass panels meet. At the top interface where the 2 aluminium and 2 glass pieces meet there is a visible gap where we can see the outside. Not sure what can be done to fix this, or if it will need to be a replacement job.
I was so excited to have a cool feature like this, and now I really regret it. I have seen many windows like this, and have never seen gaps like this, and even the silicone seems more noticable than what I remember!