The width of osTicket’s ticket list table is 940px.
In osTicket Awesome it is increased to a maximum width 1200px.
Not the improvement that you were hoping for, perhaps, but it is 27% wider.
Note that you have enabled 4 extra columns in that screenshot. I have to wonder if you would be happier with fewer custom columns.
A full-width ticket list (or at least a wider ticket list) in desktop layout is something that has been requested and is being considered for future development. Feel free to add your vote here.
I’m going to mark this as Resolved as there really isn’t anything to be “fixed”. But feel free to reply.