Camera keeps being activated for too long

[lukasschor]

When initiating a transfer by scanning a QR code but then closing the camera mode, the camera keeps getting activated for about 20 seconds. This is both indicated by the recording symbol in the browser and the light right next to the camera.

How to reproduce

1. Open Send flow

2. Open QR scan view

3. Close QR scan view

[katspaugh]

This can be still reproduced occasionally. Especially after the first time loading the page and allowing the camera permissions.
The camera turns off immediately after the second time using it.

The react-qr-reader library we're using was last updated two years ago. In the code, they do seem to stop the camera stream properly though. Although they don't release the srcObject.

There's a recently updated fork of this lib – https://github.com/kybarg/react-qr-scanner – that added TypeScript types. Might be worth giving it a try.

[tschubotz]

Marking this as major since I think a too long activated camera is kind of sketchy - not create for a security-focused product