Joomla 4.x to Joomla 5.1.2 - login issue

I just did the upgrade from Joomla 4.x to Joomla 5.1.2. However, JFBC login no longer works UNLESS you check the "Remember me" box. Then it seems fine.

Otherwise, it just forwards one to the designated next page (which is our main EasySocial page) without logging you into Joomla.

I did clear the system caches + my browser cache.

Did I miss something or is there something else I need to do related to JFBC (I'm using the latest version).

Thanks. -- Rik

Please do not reply.

My PC hasn't been rebooted in several weeks and after rebooting the login now appears to be working properly. If not, I'll update this post.