Here is an interesting glitch
I was booked on flight erw-pbi 757-200 on 6/16 seatmap showed row7 as blue(open) and tried to obtain 7c and the seatmap would not let me have the seat. The seat selector then decided to put me into 20a .
I went back and tried to change to 7C again. Again the seat map moved my seat to 11A ( ok better than 20a ).
After several attempts in trying to get the open seat in 7c I called the OP line they also had the same problem again they tried several times .
The agent called in a supervisor, He tried it with the same result he even tried all the blue seats that showed open with no result.
They called in the webhelp folks and still the seatmap beat them. The map would not allow anyone even a Plat into the blue exit rows.
Webhelp reported the problem and told me keep checking back.
Final result was at 24hr mark i tried again to get 7c but now row7 showed entirely full.
I did get to go to 9d which was fine, But it was a frustrating adventure.

On other booking since then this problem has not occured.
SO......
Can anyone figure out what happened?
Has anyone else had a tangle with the possessed seat map?