CA Gen Toolset stuck in full-screen mode and menu bar not visible

Products

• Gen
• Gen - Workstation Toolset

Issue/Introduction

Enabled full-screen mode for a Gen model action diagram window using the F12 button ("Toggle Full Screen").
Exited the Toolset using F3 (twice), but after restarting it the menu bar and its items are no longer visible.
After opening a model still only the Toolbar is visible and the F12 "Toggle Full Screen" button is also disabled.
How can the menu items be restored and full-screen mode disabled?

Environment

Release: Any
Component: CA Gen Workstation Toolset

Resolution

After restart the Toolset is in full-screen mode and only has the Toolbar visible. After opening a model it still only looks like this:



The F12 "Window > Toggle Full Screen" button is also disabled:




If go to the bottom right corner with the cursor and drag it to reduce the window size the menu items will reappear per below:

Additional Information

For Gen 8.6 there is a post Gen 8.6 Complete PTF TSN86203/SO10758 which changes the behavior so that if on exit the Toolset has full-screen mode enabled that is disabled on next restart.
That PTF has been superseded by later Toolset PTFs - for details see the CA Gen 8.6 Solutions & Patches page.