Originally Posted by
QatarA340
When booking, the initial screen should display this:
When you select the first flight, "Flight and Cabin Features" you get a text saying "This sector is not operated by Qatar Airways"
Furthermore, if you select the flight, going to the next screen "CONTINUE", you should see this:
The website clearly says that cabin class is different and that the first sector is operated by (B) Class with Economy in it.
I think you missed this part and just assumed that by clicking the first section you will get an all-business class seat.
It's entirely possible that QR has fixed the so called 'bug' in their system, is it not? What you post does not categorically undermine what OP is claiming since you're replicating it after the fact.
Of course it'd be helpful if OP uploaded a full copy of the email, with all the private information redacted instead of an ambiguous screenshot.