Maybe I’m late to the party, but what happened to my seats?

On a 737 max coming up with a family of four. I’m delta diamond so I was able to select row 4ABC but not D.

No big deal. Just got 5a.

Close to my flight I saw I could get 4D so I went to seat selection and tried to just move one seat. It didn’t like that at all…

I could select the one seat but it cleared out my others. Not ideal.

So next I decide to move eveyone to 5ABC and the 4th to row 6. THEN…. I’ll just move everyone back immediately to row four. Boy it didn’t like that either….

Immediately row 4 is now showing as occupied. Are you telling me that in the immediate seconds after flipping my seats to get what I really wanted someone snatched them? That’s incredibly hard to believe.

I’ll live… but dang that’s frustrating.