What's the issue?
If you use amp-bind without amp-state you get the error
The tag 'amp-state' is missing or incorrect, but required by 'amp-bind extension .js script'.
... but this is a silly requirement since it's legit to use amp-bind without amp-state, we do that here, for example.
Currently we work around the error by including an empty amp-state
What browsers are affected?
tested on chrome
Which AMP version is affected?
Powered by AMP ⚡ HTML – Version 1493855940942