I experienced the following behavior with PAN-OS 9.0.4 on Panorama VM:
When editing a policy and accepting the change (doesn't matter if policy editor or dragging and drop) it takes a moment, the change to get "active"/written to candidate config - so panorama freezes for a short moment, then you can work again.
BUT: I got another refresh after very change, so panorama freezes two times.
E.g. changing a policy tag: clicking the tag, remove, add ok - freeze - another whole refresh on policy page.
I'm connected alone with panorama, so I can exclude, that other users are currently changing anyithing in parallel.
Upgrade is scheduled for later
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