Hmm, that rules out the fixes that went into 4.7.5 to be the cause of this.
As an aside: please consider upgrading to 4.7.5 or later as soon as possible: https://discourse.igniterealtime.org/t/cve-2023-32315-openfire-administration-console-authentication-bypass/
Can you see if the Openfire admin console or your browser’s developer console log any errors when you (re)load this page?