Try to save a session following pedja's last post, exit. Then login again and you'll get your saved session. Now go to System, Reboot. Then I can never get my saved session back and I have to re-do all the work distributing windows inside Winbox, etc.
Anyway, the proposed "solutions" just seem "workarounds" to me and in my opinion there should be an easy, clear way to save Winbox's layout. A nice improvement would be to have customizable "views" that I could store in the PC like ini's or similar, each on with a set of open windows and selected columns, and be able to apply them to any Mikrotik.
Using the "Exit" button did not solve the problem. I really hope Mikrotik fixes this in the next release....
are you sure you have the "load previous session" checked?
In my experience, the sessions are saved 100% of the time with just closing with [X]
We just tried different ways, and it even loads the previous session when you connect to a router you never connected to previously, somebody elses previous window layout will load.
We could not get a situation where the previous session is not loaded.