cheers man, they should make Taskbar Menu and Scrollbar thingy optional during default installation if you ask me.
I looked at the source and the menu handle is attaching to a timer of ubuntu that looks for where the mouse is, I guess they are tracing the mouse to show/hide the menu, but the problem is once the laz/lazapp menu handle gets hooked to this menu handle, itself does not receive mouse interrupts anymore.
I am guessing we can fix that very easily by simply adding a Capture interrupt to the TMouse class, or even create a fake handle so that ubuntu can not hook to your app.
I am kind a bit lost in the code, but we'll get there