Try resetting the preferences:
If that doesn't work, try resetting the Workspaces:
Reset a workspace
Reset the current workspace to return to its original, saved layout of panels.
- Do one of the following:
- Click the Workspace menu icon and select Reset to Saved Layout.
- Choose Window > Workspace > Reset to Saved Layout.
If that doesn’t work,try updating or rolling back your graphics driver directly from the video card manufacturer’s site.
Are you still experiencing this issue or have you solved it? Please let us know.