I made a problem report to Izotope about this problem.
Ref #ZIV-38857-596
 

Izotope acknowledged the minimized problem with Ozone 6.  They are working on a fix.
 
Here is the response from Izotope:
 
Thank you for contacting us.

This issue was recently reported to us, and we have been able to reproduce it. We have reported this to our QA and Development teams for further investigation.

We have found that this issue occurs specifically when the Ozone 6 window is minimized, so a work-around would be to close the Ozone 6 window when it is not in use, rather than minimizing it.

I do apologize for the inconvenience! Please let me know if you have any questions about this.

Sincerely,
Lorne

   Thanks for the info guys. I just bought Ozone 6 a week ago, and have been mostly using it in standalone mode. I've got to say, I'm not all that impressed with it.
   Question: Where is the history button in standalone? I absolutely can't find it. Is it possible I'm not getting a full screen in the UI and it's cutoff from the bottom ??

The History button is there on mine.  On the bottom row between Undo and Options (and Help). 

fireberd
Izotope acknowledged the minimized problem with Ozone 6.  They are working on a fix.

not quite, to clarify: they can reproduce the issue and they're working on "investigating" why it's happening... if the issue is discovered to be in their own code, then a fix may come:

Izotope via fireberd
This issue was recently reported to us, and we have been able to reproduce it. We have reported this to our QA and Development teams for further investigation.

fingers crossed!

The bug is likely a compatibility issue with certain video adapters, a problem that's been popping up in a lot of products over the last couple of years as more and more vendors start implementing GPU acceleration (Ozone started it with version 5). It's a cool feature, but unfortunately requires developers to code a lot of special handling and exceptions for different video cards. That could explain why not everybody reports seeing this problem.

I don't minimize Ozone when I'm using it. Its either open or "closed".  I would have never known there was the bug if someone had not posted it on the forum.  Probably others the same way.

Thanks for chiming in Fireberd, it appears that my window is not showing the bottom row of stuff! It only does this in standalone mode. What to do? (hypothetical) - I have 160+ plugins, hundreds of other programs in my computer. This is the first time I came across this problem. I hate to mess with screen resolution just for this.

You may have to reinstall Ozone 6 (uninstall it then restart the PC before reinstalling).  The standalone version does not fill my screen and places itself sort of in the middle of the screen.  There does not appear to be any resize options for the Oxone 6 panel.

Ozone 6 requires a screen height of 900 pixels to display the standalone: https://www.izotope.com/s...esolution_Requirements