Here are some of my testing results: I have performed the clean installation of the Apache 2.4 server, PHP 7.4.4 and mySQL 8.0.19 on Windows 10. I have installed a clean installation of Wordpress 5.3.2 and miniBB 3.4.2. I have followed all instructions to integrate miniBB + Wordpress we have currently in the related package
. I have created an admin account in WordPress, and an Author account for tests. Tested in Firefox 74.0 (64 bit).I could confirm that the logging works
with the mentioned implementation, and it works both sides - I could log-in from the forum or from the WP login, and then I am logged in to the both sections. Logout also works.
So - the current solution still works with the newest release, and I suppose, it should work with the older releases (I doubt that WP team will implement some new login routine and then revert back to the old).
Regarding your problem, I could check it in terms of Premium support, or at least I have to see on my own what happens. If a default solution couldn't be used with your installation for some reason, I will not charge for it - only for some fix if needed. If you are ready to go for it, drop me a letter via Contact-Us form
and I'll try to reply ASAP with details.