Scrolling the window up and down no longer works

[Ananda]

Scrolling the window up and down no longer works, don't know why. I've had WM for so many years, with no problems. My version is 4.4.2; Mac system Yosemite 10.10.5
Title bar clicking does nothing, or else expands the window to full screen size!!! aaargh!!
hoping for a solution, thanks.

[rgbworld]

Please ensure you have followed instructions in Read Me file. I think you may need to uncheck "Double-click a window's title bar to minimize" in System Preferences > Dock.

Let me know if that does not fix issue.

Thank you,
Chris