Occasionally the member Properties grid becomes corrupted and difficult to view. A large blank area on the right pushes the properties grid to the left. It is unreadable unless the overall properties area is made wider.
This illustration shows the issue on the left and the corrected view on the right.
The solution is to dock the Properties grid at the right, then pin and unpin. This should correct the grid. You may then undock and move it to another screen as needed.