Hi Vladimir – Checking back on this to see what progress may have been made. We also have some updates based on further testing:
Note that there appear to be different permissions needed to update the Title field of an event series than the permissions needed to update the date/time field of an event series. This threw us off when testing until we discovered it. It may also provide some clues to which capabilities might be involved with this issue.
Granting Author role all capabilities and adding back Posts Edit Prohibit and post IDs (15832, 15790, 11652) and the event series title and time can both be updated without failure notice.
Giving the Author role Activate plugins capability allows updates without failure to both Title and Date/Time fields as long as Posts Edit is set to Allow all. If Posts Edit is set to Prohibit with Post IDs added, the update fails.
Giving Author role Activate plugins capabilities and URE manage options allows updates without failure to both Title and Date/Time fields with Posts Edit is set to Prohibit and post IDs added.
Take away URE Manage Options capability from Author role and Change Posts Edit to Allow and the event series Title can be updated even with a failure notice.
Grant URE Manage Options capability for Author role and add back Posts Edit Prohibit and post IDs (15832, 15790, 11652) and the Title can be updated even with a failure notice.
Grant all URE capabilities for Author role and add back Posts Edit Prohibit and post IDs (15832, 15790, 11652) and the date/time field can’t be updated for a series.
Grant all URE capabilities for Author role and Change Posts Edit to Allow (remove the post IDs) and the date/time field can’t be updated for a series.
Thanks for any updates you can provide.
Deactivating URE also resolves the event calendar series update failing issue.
