Logout issues

Hi Kyle

I am aware of the recent Joomla issues with session handler logging out, and I have updated to version 3.8.5. I believe however, that I was experiencing a problem with this before Joomla 3.8.4, and in any case I certainly still have a problem, in that users are not being logged out after the session lifetime, currently set to 5mins for testing, with the handler set to Database.
I am also aware that this can be caused by keep alive behaviours, so I'm doing my best to track down whether this is the issue.

I do have a possible related issue as well, though, which is that I cannot log users out from admin. When I try and do this, the user is shown as still logged in on the front end, and a page refresh shows them as logged in to Admin as well. Can you suggest what is causing this please?

Thanks

CB does not maintain the Joomla session. That's entirely handled by Joomla. Suggest posting on Joomla.org forums if you've session expiration issues.

Okay, point taken on that and I'll work accordingly on the session expire issue.

I have made some progress on the issue I have logging users out from the backend. I activated the Joomla login module alongside the CB login and it seems that if a user logs in via Joomla, they can be logged out by Admin, but not if they log in via CB.This suggests to me that I've got some conflict somewhere in my CB setup on this site, maybe?

Looks like your issue is due to the below.

github.com/joomla/joomla-cms/pull/19548

Joomla I guess used to clean up sessions on page load, but it no longer does this and depends on PHP session garbage collection to do it. Based off the PR this has been the case since Joomla 3.8.4. Is that right around when you started having this problem?

Ah, okay, I think its possible it started with 3.8.4. The odd thing is that the Admin logout issue is just on one site, and I have a parallel site with almost identical config which is not showing this issue, although it does have the session expire problem. Il'' take a look at the info given from the link you give. Thanks for that.

No idea what to suggest regarding admin logout issue. That's entirely a Joomla issue as it's a Joomla administrator module that just deletes sessions.