[QML Video Recorder] ComboBox orientation changes

Steps to Reproduce:

1. Open Example and build it
2. Record video and keep the recording ON for all the steps below
3. Open settings
4. Select any comboBox 

Actual Results:

All ComboBoxes will open in a horizontal orientation. (screenshot attached)

Expected Results:

Either the ComboBoxes should open in a normal vertical orientation or they should be disabled while recording the video.

Reproducibility:  100%