Broken site that uses Shibboleth SSO

my place of employment uses “Kronos” from UKG (Ultimate Kronos Group) as their time-card software and has it integrated with our local Shibboleth SSO provider. The SSO works almost everywhere except when logging into this application, when it gets stuck in an infinite loop where it reloads the SSO repeatedly after authenticating. This happens regardless of the Shields status or mucking about with other settings in the Advanced Shields. Works fine in Chrome with UBlock Origin and Privacy Badger enabled, and this is just about the only reason why I still need to run Chrome on a regular basis.

I’m not sure how I would be able to help debug this as it only happens after authentication with credentials I won’t share, and the SSO works fine everywhere else I’ve needed to use.