Sometimes navigation in the editor doesn’t work properly.
Top view: cannot zoom in on where the mouse pointer is pointing
Perspective View:
Sometimes the A, S, W, and S keys don’t work, nor does mouse rotation.
Sometimes when loading a static mesh, it cannot be selected with the mouse (it is not selectable). You must restart the editor to be able to select it.
I had the first two problems from version 5.4 to version 5.6
The last problem I only had in version 5.6
Thank you so much and Best Regards!!