Chrome Version       : 50.0.2661.94 (Official Build) m (32-bit)
URLs (if applicable) : https://cad.onshape.com/documents/748dc477799652fd9c27dc14/w/29816f0f074376a9fe0c1be8/e/955e755662586d0b5ad0d231

Other browsers tested:
  Add OK or FAIL, along with the version, after other browsers where you
have tested this issue:
     Safari: OK
    Firefox: OK

What steps will reproduce the problem?
(1) Locate a computer running a Radeon with driver version 15.201.1701, or a Firepro card with driver version 15.201.2401
(2) On that computer, navigate to https://cad.onshape.com/documents/748dc477799652fd9c27dc14/w/29816f0f074376a9fe0c1be8/e/955e755662586d0b5ad0d231
(3) Log in with a free Onshape account (or contact bug author for credentials)
(4) Wait for page to load
(5) Open the hamburger menu towards the upper-left of the UI.  (See attached video)
(6) Select "Copy workspace..."
(7) Wait for the copy to load
(8) Right-click on the text that reads "Extrude 1" in the list of features (See attached video)
(9) Select "Edit..." from the context menu
(10) Observe that most of the model geometry disappears

What is the expected result?
The model geometry should show a semi-transparent preview of what the feature does (see CorrectPreview.png)

What happens instead?
The model disappears.

Please provide any additional information below. Attach a screenshot if
possible.
This issue appears limited to specific versions of AMD drivers. For Radeon's, updating the drivers resolves the issue.  However, for Firepro cards updating is not an option.

The issue does not reproduce in Firefox in the same environment.  Forcing Firefox to use DX9 works fine as well.

The code that exhibits the issue involves rendering and compositing off-screen framebuffers (FBOs).

 

Deleted: CorrectPreview.png 103 KB

	CorrectPreview.png 103 KB View Download

Deleted: PreviewIssue.mp4 2.8 MB

PreviewIssue.mp4 2.8 MB Download

Deleted: gpu_details.pdf 717 KB

gpu_details.pdf 717 KB Download