What's wrong with the mouse

[mfanschen123]

When I use my mouse to draw, like draw a road connecting goods, cities, that always show me the help window autoly, what's wrong with my mouse?

[Ters]

The help window open if an unknown button is pressed. Could it be that your mouse is configured to simulate certain key presses when some buttons are pushed, or when some gesture is performed?

[mfanschen123]

No, my mouse is not with a key, the problem is when left-click and draw, it will show help window. right-click is OK. I use 112.3 and PAK 128.