Cardboard renders to black when switched to VR Mode with uGUI

[HardcodedNumber]

When using uGUI the UI shows up fine when I don't turn on VR mode. However, When I do I see black and just the UI. I took a snapshot in Xcode of the OpenGl State and I can see the the split view via the left and right cameras from cardboard. After, the depth buffer clears and renders to black. then the buttons renders. Any suggestions?

[rsanchezsaez]

Sorry for my late reply. I don't have the time to look into this, did you make any progress?

[miraclestar]

I got this problem too.
And:
I toggle the SettingsButton and AlignmentMarker are not work;
Cardboard.SDK.EnableSettingsButton = true;
Cardboard.SDK.EnableAlignmentMarker = true;

the place of SettingsButton is clickable, but no UI shows;