SEVERE screen-space canvas positioning/rendering issues in Direct3D 9c + Windows 7

UPDATE: Repro attached at bottom!

Hi, the login screen for my game uses a fullscreen canvas UI, like so:


As you can see, the UI is working great in the editor -- and you'll have to take on Good Faith that it also works standalone on my Windows 10 PC and my coworker's Apple Mac.

Instead, my Windows 7 users with DirectX 9 are seeing this:



I am using:
Unity
Version 5.2.0f3 (e7947df39b5c)
Fri, 28 Aug 2015 15:47:22 GMT
Branch: 5.2/release

My users' specs are:
graphicsDeviceID: 10674
graphicsDeviceName: Intel(R) Q35 Express Chipset Family
graphicsDeviceType: 1
graphicsDeviceVendor: Intel
graphicsDeviceVendorID: 32902
graphicsDeviceVersion: Direct3D 9.0c [igdumdx32.dll 8.14.10.1930]
graphicsMemorySize: 64
graphicsMultiThreaded: true
graphicsShaderLevel: 20
os: Windows 7 Service Pack 1 (6.1.7601)
platform: WindowsPlayer
processorCount: 2
processorType: Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz
systemMemorySize: 2003

I was able to reproduce the issue locally in a Windows 7 VirtualBox VM. As you can see, the UI is no longer centered on the screen, and is surrounded by black -- resizing the resizeable window then causes it to disappear completely:



Seems to be working fine for all of my Windows 8 and Windows 10 users that are running Direct3D 11.

Is there anything immediately obvious that could be causing this rendering problem/failure? It is correct that I do not need a camera to display a screen space UI canvas? Also, should I file a bug report?

 

Here is a screenshot of it working perfectly on Windows 10:

 

Any ideas?

 

@TheChuckster

Check the 5.2 patch releases, there were some involving camera rendering position being incorrect and dx9 UI breaking when resizing screen.

 

@Zuntatos

I've upgraded to the latest 5.2 patch release (5.2.2p1) and rebuilt, but it seems to still have the camera positioning problem.

Which change log mentions the camera positioning issue? I couldn't find one when I searched manually.



Resizing seems to work properly now (before it made the entire screen go black), but the camera position is still off.

I don't feel comfortable trying 5.3 _beta_ for a stable production game, even though I have a license.

 

I managed to make a repro project, and I have submitted a bug report to Unity. It's pretty easy to repro in a VirtualBox Windows 7 VM (with experimental Direct3D support enabled).

The repro is attached:
https://www.dropbox.com/s/zdjri2ug98h42ei/CameraRepro.7z?dl=0

Issue:

http://i.imgur.com/fftK6Yx.png

Correct:

http://i.imgur.com/fHwQ5TF.png