Hi there. Sorry about the delay.
I’ve tested out the 4.88 dev build you provided and I see no additional error messages in either the dashboard reCAPTCHA settings when I turn it on, or at the login prompt when trying to use it while it is turned on. The behaviour is the same as before.
In case it helps, when attempting to login, I do get the advanced human detection feedback like having to select the images with cars in them or having to trace around a street sign. After doing that, the widget validates me as a human (I was wondering about that…) and then when I actually click to login it fails with this message (this is the same as before, by the way):
ERROR: Human verification failed. Please click the square box in the reCAPTCHA block below.
This… despite the fact that the human verification appeared to work fine (green check mark for normal I’m not a bot checkbox, or more advanced widgets working, etc…)
Are there logs that I can send you?