Hi Michael,
On Windows 7, with regular Logitech mouse, following JP's lead, there is a problem with using the Lightbulb icon in my taskbar.

Click lightbulb to open MoI v4, MoI works normally, draw a circle, square, etc.
Click lightbulb to "hide" v4.
Click lightbulb to "unhide" v4.
The dialog window in the upper righthand corner no longer functions. It is blank, or frozen depending upon state before hide/unhide.
Drawing tools do not work, unless I right click on the mouse.
Then a drawing tool can be clicked on, say circle, but menu expansion does not show, but the circle, can be drawn.
Unless a right click is done, another drawing tool cannot be selected, also if two drawing tools are selected, then right click is done,
the first one can be drawn.

There are some permutations. If a drawing tool was started before the hide/unhide occurs, it will work after unhide, but the dialog screen is frozen.

- Brian

Sometimes planar works, or not.