Something I notice, when I use the select tool, the inspector bar is not supposed to show up until you actually select an object. When I use the select tool by first using the edit tool and hitting the space bar ( toggles the select tool ), it works as expected. If I use the select tool from the context menu, it works as expected. If I add the select tool to the tool bar menu, and use it from there, the inspector bar is visible whenever the select tool from the tool bar is active. I had it working from the tool bar menu for a while, then it suddenly stopped working as expected, inspector bar always visible instead of just when an object is selected.
Sometimes is seems my configuration randomly changes.