webcam: unable to switch camera via msg.camera

[regystro]

Hi. I've got a phone with front and back cameras. I'm tryng to switch between them using msg.camera with no success.

Which node are you reporting an issue on?

node-red-node-ui-webcam

What are the steps to reproduce?

Use an inject node + change node to send msg.camera=[any number from 0 to n] to webcam node

What happens?

• The camera is disabled, and stays disabled until I activate it clicking the canvas. No matter what I send, it always reverts to the front camera. So there's no way to switch to the back camera unless using the dropdown selector.
• Even after using the dropdown selector to choose the back camera, anytime I reload the page it switches back to the front camera. It seems LocalStorage is working inconsistently. There's no way to save the back camera as the default.
• Also tested with and without "Start webcam automatically" option checked.

What do you expect to happen?

Switch between front and back camera normally, as it happens when I use the dropdown selector inside the canvas.

Please tell us about your environment:

• Node-RED version: 2.2.2
• node.js version: v16.13.2
• npm version: 8.1.2
• Platform/OS: Oracle Linux Server 7.9 (Fedora)
• Browser: Chrome for Android 98.0.4758.101