Reader mode not working while same page in Safari does work?

[Josscii]

Is this a known issue?

[Cee]

It can be an issue or bug, and also can't be.

We are using a tricky script built in WebKit / Safari 9.0, and now Safari 10.0 has changed its implementation.

Need to dive into WebKit and Safari for further learning and improvements.

[Josscii]

ok...