Please clarify - do you have only a rectangular tool or all mask/path tools besides polygon tool?
And did you try to move mouse on to rectangular tool icon and press left mouse button a little bit longer - it should reveal a submenu of all tools (also rectangular tool) to chose from?
found it. Thank You.
I didn't realize that you're to hold when clicking on the icon... Thanks for your help...
I'm glad that I could help. Please mark my answer as Correct - that way it will be indexed as correct and maby will help other people with that problem.