Partial Massview build

Hello all
I just requested to send my 13 OC in a mass view, and only 5 and a half is displayed, following are grey and not selectable.
I tried to restart but I still have the same issue…
Any idea?
Thierry
EditOne If I scroll to the right the bottom rows appear again, until I scroll left…

Solved probably: My flash memory was about full… Clean up on going.