Issue keeps happening (see above post).
On Monday 18/11, on ARN/CDG, 7D was moved to 7B, next to me. To add insult to injury, the 7D seat was a paid seat!
Last Sunday, on AGP/CDG, 9D was moved to 9B. On the outbound flight CDG/AGP, we did not suffer from this indignity though.
On both occasions neither the app not the website reflected my moving B back to D. So I had to call the PSL everyday to check if the D seat had not been moved again.
Has anyone any idea about the issue?
PS: FWIW, the PSL confirmed that booking A&C or D&F, will automatically be changed to AB or BC as well as DE or EF. They have not heard of AF going against 2 aisle seats on the same booking.