Video is missing after app switch on iOS

[DennisNurtio]

Describe the bug
When ScanApp is added to the Home Screen of a iPhone, the scanner malfunctions when you switch away from the app and back. The same behavior does not occur when you view the same page through Safari (this works correctly).

Seems to be a component issue: so also reported here: mebjas/html5-qrcode#515

To Reproduce
Steps to reproduce the behavior:

• On iPhone, open https://scanapp.org/ in Safari
• Click on 'Add to Home Screen'
• Close Safari and open the 'ScanApp' app through the new icon on the Home Screen
• Give permissions and start scan. Wait until scanner is operational.
• Push the hardware button to return to the Home Screen
• Click the 'ScanApp' icon again
• Video is now gone, and scanner visuals are overlaying the whole page
• Expected behavior
• After returning to the app the scanner should still be operational, just like the same page in Safari.

Screenshots
After switching:

Smartphone (please complete the following information):

• Device: iPhone7 & iPhone 12 Pro
• OS: iOS 15.6 & 15.5
• Browser Safari