Object Manager Missing Object Properties

Occassionally the object properties in my object manager will dissappear and I am unable to bring them back. I have tried toggling all the buttons on the manager, restarting corel, resetting corel to it's default settings and restarting my computer but nothing will bring back the properties. It does not happen on every single file but it happens often enough to be a pain. Can someone please help me figure out why this is happening? I have attached a picture of what the object manager looks like. Thank you in advance!

 

Object Manager sans properties