I previously would hold the middle wheel down anywhere and could move the mouse to rotate the view angle. Now I have to click on a surface or edge then click and hold the middle wheel while on that surface/edge to rotate the view angle. I have never experienced this issue before. This just changed suddenly without me making any setting alterations. I don't know if an automatic update perhaps changed some settings, but I have not been able to find any setting that would correct this issue. I am currently running SolidWorks 2017 SP5. Any ideas on how to fix this issue. Thank you in advance for your help.

Also, now when I click on a surface, a normal vector to that surface appears and a tree above which I do not recall being there. I could be mistaken though.