Both doors are 1st class door while the seats are second class so the second door need to have it's sticker replaced the first one need to be changed as the door is also offcenter.
In the devstream before launch we same some issues with second/first class mixed up. I think one the devs should review this both from the exterior side and inside.
Noticed this as well and went to check the forum to see if it has already been mentioned - well spotted xavpin234! As stated above, the 5th carriage has a big number 2 on the exterior, and inside all the seats look second class, but the interior doors say it's first class. I'm sure there would be some people who would say the game is 'completely broken' because of this haha