Reply To: [Waiting for user feedback] Categories and Tags divs are not displayed for certain users

Hi,
I have a custom role of WP level 3 with the rights to add/edit/delete a specific CPT. On the Add new CPT form I hid the div with the id=postbox-container-1, where the Categories and Tags divs are located. I kept this div hidden for two weeks. During this time, new users with the custom role registered on the site, and obviously they could not see the hidden div. Today my client decided that he still needs the Categories and Tags to be assigned to the CPT, so I've enabled them.
Users registered before I first hid the div can again see it and apply tags and categories to their entries, likewise users registered today. But users registered under the period when the div was hidden can still not see it now, after I've enabled it again.
Thank you for your fast answer!