Odd behavior - Viewports disappearing when editing other viewports.

[hollister design Studio]

This happens fairly often.

I have more than 1 viewport on a sheet layer - I enter  'edit viewport annotation' to edit - when I exit out of the edit mode one or more viewports are no longer there.

this is not good.

 

Current example:

Here is a sheet I'm getting ready for a revision release - I just need to add one more callout:

 

Now I go into Viewport 1 to edit the annotations - when I come out - Viewport 2 the elevation is gone:

In this case viewport 2 was connected to the elevation marker in Viewport 1.

So I reenter annotation space and select the elevation marker.

Then in the OIP I used "navigate to viewport"  to see where the heck it's gone off to.

 

Here is the result:

 

 

The view is zoomed out very far.

Yet when I 'select all' there are still only two object - viewport 1 and the title block border.

 

Where did Viewport 2 go?

 

 

 

Now the weird part...

 

I generally keep my viewports on the NONE class.

in this case BOTH viewports 1 and 2 are on the none class.

 

The None class is visible and I can see viewport 1.

 

Just to make sure I turn the None class off and back on...

Now both viewports are visible again.

What is going on?

 

 

Hardware:

I have an AMD RADEON PRO WX3200 card (which is the current version of the  Radeon Pro WX 3100  which is on the "QUALITY-TESTED HARDWARE' approved for VW2020 list).

Most current driver 21.Q1.1/OpenGL 4.6/4GB vram