winrt: First capture doesn't produce image

QML Camera doesn't run any of its callbacks (captureFailed, imageCaptured, imageSaved) when first capture is done. Subsequent capture calls work as expected.

Steps:
1. Run attached example.
2. Tap screen on device.
Expected: console log from imageCapture / imageSaved / captureFailed.
Actual: Shutter sound is played but no console logs nor image produced.