Hope it is OK that i comment as well. I got this very same error yesterday.
And if i reverted back to before i assigned updates from the project to the 2D drawing board, the objects re-appeared. Whenever i tried to make changes, the components or bodies disappeared.
Here is a video showing you how much i struggled. You may need to scroll a bit into the video.
Video is public, but for some reason the insert-video function claims it is not.
https://youtu.be/qucoo7YR_Wk
Today i found an article saying i had to update my graphics drivers, which i did, (a whole other story i will not go into) , but that did not fix the problem.
After a long while, i started thinking about something.
The main objects that vanish are objects where i saved a body as a component, then saved that as a Fusion360 *.f3d file. Then i re-opened these components from disk, into my project, so i would have dedicated base views, since I wanted to document each step on how i created a model.
Now, i started thinking. These objects in my 2D drawing has to go through a lot of junctions, to appear in my 2D drawing.
First they are loaded into the project from disk -> Linked to the actual f3d-files on disk -> Then each of these have their own, linked components in the project. If you make a change to any of those components, fusion 360 would notice and demand an update in the project, which is fair and OK if you are designing a model.
But there is now an additional step for these links, to re-link them. And that is into the 2D drawing.
Basically every time you make a change in the 2D drawing, a rewrite or whatever, a command goes back,
2D-> project-> f3d-file = Has any updates happened at any point?
Fusion then checks, and checks the f3D file for updates, then the update is updated to the project model linked and loaded, then fusion tells back to the 2D drawing, nope, no changes!
Problem is, the base file here, is a file that exist on a physical disk, the f3d file. And it needs to be accessed every time you make a change.
I was wondering why adding a new base view was sooo slow for the project, and then I thought:
"What if i break the link?" - Then save the project , with the files / components/bodies inside the project itself.
Essentially eliminating the need for the f3d files which will not be changed anyway?
Because a linked in object or component, is not actually saved IN the project itself, but loaded from disk when you load the project. When you break the links, the components will be orphaned from their links, and becomes their own components and objects within the project files.
So first i broke the link in the Fusion 360 main project, to the f3d files i had added.
When i did this, the drawings updated with messages that all my relations inside , related to those specific objects, were no longer valid, since they essentially were referring to the old , linked objects, although visible, i could not associate the dimensions and such. So i had to delete the base views and projected views i had made, letting the text remain as identification marks.
Afterwards, i just remade the base-views , after i had updated the 2D from the project with updates.
Because the updates i now would get from the project would be with the non-linked objects.
I started redrawing now, using the UNLINKED objects, and so far, no glitches like before.
So it seems the main reason for the glitches is because i used linked objects into my 2D drawing.
I see from the screenshots in this post that other people also use linked objects/components and bodies, and it would be interesting to see, if they broke those links, and remade the 2D like i explained above, if they also stopped getting broken representations in the 2D view.
The suggestions to suppress/unsuppress was unsuccessful as a solution for me.
PS: When i broke the links, the 2D insertion of new base views from scratch were a LOT faster than when the objects were linked to disk.
During this I also found that one of the LINKED components, had an error in it, basically the reference models it had used to be combined with, were no longer referenceable from the main project as they had been deleted.
I believe it may have also been a bit of the cause to the bugs, but even after I deleted it, and recreated it, errors still occurred, but that was also before i removed the links to the f3d files.
Not sure what the Fusion360 crew thinks about this, but to me it looks like using linked-components from disks in fusion360 is only feasible until it is not, and linked objects should have the links severed before any 2D drawing using them are attempted.
Sometimes i wonder if the 2D drawing space has memory problems, because often when i zoom in or out to work on my drawings, even the components from the native project are "hidden" or become invisible. Only way to view them again is to either move them or sometimes only forcing an update from the project gets them all back.
Especially if there are a lot of base views in the 2D drawing it seems to struggle with updating what you see in realtime.

Regards.
Bård
Norway