7.8.2 pro in the past couple of days I've not been able to access BWC modules in my TST server. Including Campaigns and Administration.
I can log in fine, navigate sidecar modules and use them just fine, but when I go to Campaigns, for example, it bumps me back to the login screen with the following URL and I'm unable to access that module. The same happens if I try to go to the Administration module.
The only change I know of is a test by our sysadmins to switch from APC to Zend OPCache.
What would cause this authentication issue?