ruewa on "[Plugin: WP Limit Login Attempts] Captcha broken after update to 2.4.6"

No captcha any more after update to 2.4.6. (WP 4.5.2)

Normal login window instead, login without problems. Before update captcha worked.

https://wordpress.org/plugins/wp-limit-login-attempts/

Update: Seems to be completely broken: No timeout after > 5 attempts either.

Update: Deactivation / Reactivation helped, but still strange behavior:
a) Fallback to main page after first failed login attempt
b) No captcha but normal login after logout