I haven’t experienced it, but then again it is rare that I log out.
I actually had to do a system restart, whilst testing something else (avast Backup and Restore settings, that some have reported failing when trying to restore).
When I started Firefox and my open Tabs, I had to Login to the forum and I didn’t get a Recaptcha.
Are you using some sort of VPN it may think is suspect ?
Very strange, I can’t see anything related to your forum use that might/could trigger this. In your info to the left of your post has that said ‘Poster’ for a while, seems strange for that post count ?
Do you actually log out when you leave the forum or clear cookies, etc. ?
All I can suggest at present is do another quick reply, which will probably result in your third (and hopefully last) recaptcha interrogation.
I don’t use the Keep me signed in option either and this isn’t an issue for me. If I restarted the browser and I have my tabs restored, I sign in if required (using my Firefox saved logons) and login. No Recaptcha.
I did experience this when I logged on once at an another site and that was only the Yes I’m a human check box. So I just wonder if something is considered suspect with your connection (which was why I mentioned the VPN question).
What is really strange is why this also goes beyond the forum anti-spam measure of the first 3 posts and the fact that your forum stats recognises your post count and aren’t in the newbie category. I can only think that this is something above and beyond the usual forum anti-spam measure. What that might be is beyond me.
That’s strange also as I have made no provisions to ‘whitelist’ avast cookies in Firefox. I have uMatrix and uBlock Origin, Disconnect and Privacy Badger add-ons with no issue.
I also used to have Cookie Monster, but that isn’t compatible with the latest versions of Firefox. I did use CookieMaster as a replacement for Cookie Monster, but that proved to be more trouble than it was worth, so it sits disabled.
OK I have been checking again after I did a system restart.
When I opened up my fixed tab for the forums I got the logon screen as I expected, at the bottom of that screen is the small Recaptcha icon.
However I didn’t require any further interrogation I was able to click the Continue button as my firefox password manager had filled the fields. So it isn’t the forum anti-spam measures that hitting you but the integration of the Google Recaptcha and the forum logon URL, I think. Why is the $64,000 dollar question.