Shopify App Bridge scanner shows blank scan screen intermittently on IOS #535
Description
Describe the bug
When using the app bridge Scanner API https://shopify.dev/docs/api/app-bridge-library/apis/scanner the camera intermittently opens to a black screen with the scan outline still visible. The camera screen needs to be closed and reopened to proceed with scanning an item.
To Reproduce
Steps to reproduce the behaviour:
Implement the simple scanner behavior from here:
https://shopify.dev/docs/api/app-bridge-library/apis/scanner
for example:
onClick={async () => { const payload = await shopify.scanner.capture(); handlePayload(payload) }}
You can get the screen to appear by randomly switching between scanning items and clicking "cancel" to close the scanner. Eventually you'll see the blank screen. Sometimes it happens every 2nd scan, sometimes every 20th.
Expected behaviour
The scanner should not show a black screen on IOS devices.
Contextual information
Tested on multiple IOS devices with versions 18.6 and 18.7
This has been happening for a few months, I thought this was a camera issue until other users started reporting the problem. This never used to happen.
Packages and versions
List the relevant packages you’re using, and their versions. For example:
@shopify/app-bridge-react@4.2.3@shopify/polaris@13.9.0
Platform
- OS: IOS
- OS Version: 18.6 and 18.7
- App: Shopify Mobile
Additional context
Image attached showing blank camera.
