Seating chart trouble

Has anyone had trouble with the seating chart today. I booked flights this morning from MCO to LGW and the chart worked fine for the outbound flight but I get the message that the seating chart is not available when I try to select inbound seats.

How far ahead are you booking?
I booked mine on the day the inbound was released and had to wait a little while to book seats.
That was back in April.
Dick D

I'm booking next June as far out as booking allows.

I don't know why but I had to wait 24 hours for the seat map to open up for my return flight. All's well that ends well.