[Camera] Unable to move or zoom after object deletion

[Zehra]

Steps needed to confirm and replicate:

1. Zoom in or out with camera. (To verify camera movement.)
2. Select an object within the map. (Tested with pyramids and boxes)
3. Object menu -> Delete Selected to delete object.
4. Attempt to zoom in or out with camera. (Camera does not zoom.)

What resolves this:

• Switching to another tab and back again
• Opening and hovering over a menu option before going to the 3D world view.

An observation to be noted:
In the Object menu, Clear Selection and Delete Selected may not be selected/are faded out when this occurs. Interesting enough, they remain faded out even if zoom works, but become re-enabled when an object is selected.