How to not have projects view collapse when switching to fullscreen and back

[A]

Hello,
   I am using slickedit pro V23 and hit this problem- Let's suppose I have the project view/window expanded to show all the files or a subset of them. I open a file and am reading through it and decide to go full screen (ctrl+b) and when I come back (ctrl+b again) the project view collapses. I have to once again navigate to the folder structure in project view to open another file.
  Is there a way to hold the project view state between full screen switches
Thanks

[Clark]

Make sure "Auto restore projects tree" is turned on (Tools>Options>Application Options>Auto Restore).

If this isn't the problem, please post a small sample toy workspace with files.

[A]

Thanks a lot Clark, that worked!