Flyover tool issues -

[hollister design Studio]

This happens in EVER file I have and I honestly have no idea what I'm doing wrong here.

 

I use the second Flyover mode (interactive origin) and always boomerang mode (Ctrl+MMB)

I rotate between every action and flip between top/plan and the model space often.

Working Layer elevation is set to 160' which is finished floor height.

 

Every time I switch to top/plan VW moves my interactive origin down to near (but not at) Z=0

 

• I click on the geo I'm working on to set a point using shift+C to activate flyover.
• Hit 'X' to get back to select tool.
• I rotate around that point with no problems using Ctrl+MMB boomerang mode.
• I go to Top/Plan and pan around/work a bit.
• I use the ctrl+MMB boomerang mode to roll out of Top/Plan back into 3D - and the Interactive Origin has moved.

 

Here is a video:

 

What is happening here?

 

Why can't I get the interactive origin to stay where I've set it?

 

Note: all those 'grey bubbles' are existing trees.

They also keep dropping to Z=0

I've almost given up on plants, trees or landscape areas actually staying at the site model surface.