Recaptcha not working for replies to existing comments

[agitator]

Using plone.formwidget.recaptcha-2.0a3 with Plone 5.1b4 on
http://www.swissbanking.org/de/services/insight/insight-2.17/vollgeld-oder-die-verstaatlichung-des-kreditwesens/insight_article_view

When I comment on the article recaptcha works but if I try to reply to a comment I get the error that recaptcha cannot be reached. Testet with Firefox and Safari.

Anyone else seen this, any advice how to debug?

[bizuyghur]

We also having the same issue. It seems that the multiple Recaptcha on same page makes them just spinning when clicked.
plone.app.discussion-3.4.2
plone.formwidget.recaptcha-2.3.0