WebSerial Port selecting window not showing

[dilushan]

I am trying to use webserial API but when requesting ports Serial (COM) port selecting window not popping up
Please refer here for a sample application
https://github.com/dilushan/webserial

My platform:
nwjs 0.40.1 with --enable-experimental-web-platform-features
windows 10

Error:

"Uncaught (in promise) NotFoundError: No port selected by the user."

please refer following issue that addressing same issue for webusb
#5418

This is woking on latest chrome without any issue

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[serra82]

I have the same problem with:
nwjs 0.84.0 with --enable-experimental-web-platform-features

[bswanwick]

I confirm this issue still exists in version 0.93.0. It does not exist in 0.72.0. I'm on Windows 11. I am able to call navigator.serial.requestPort() in 0.72 and the Chrome dialog appears to select a COM port. But in version 0.93, I get error: NotFoundError: Failed to execute 'requestPort' on 'Serial': No port selected by the user.

No dialog appears. Somewhere between 0.72 and 0.84 (see comment above) we have breaking change to navigator.serial API.