A drawing or drafting view is empty.
The annotation is not retained. The annotation looks valid and attached, but the geometry is missing.
There is also a circle X (circle with an X) inside each view.
Solution
This could be a reference view.
1. Hover the cursor over the view, 'MB3-->Settings'.
2. Expand 'Common' and highlight 'General'.
3. Turn OFF 'Show as Reference View'.
Now when the view is updated, the geometry should re-appear.
Notes and References
Hardware/Software Configuration
Platform: all
OS: n/a
OS Version: n/a
Product: NX
Application: DRAFTING
Version: V1926
Function: DRAWING/VIEW
Ref: 001-10222894