Buttons move during browser window resize

When we run an Articulate Sotryline 2 created course in any browser with the player properties as shown below, and the window is resized, the built-in player hotspots for all the buttons (Menu, resources, navigation, prev/next) move towards the center of the screen. So, for exampple, clicking on the next button does nothing but clicking on the "prev" button activates the "next" hotspot. Clicking on the space left of the "prev" button activates the "prev" hotspot. Maximizing the window does not put things back the way they were.  Is there a configuration that is not being set correctly? We are forced to lock the player at optimal size and some students find it to small to see on their big monitors.