I’m having the same problem. Custom post type not showing up in select list. Tried including taxonomy too per this post https://support.advancedcustomfields.com/forums/topic/post-object-field-no-matches-found/ but that didn’t help. Nothing in debug log. Running Twenty-theme (with only ACF Pro and CPT UI active plugins) as am already trying to debug why Post Object field was showing multiple select fields and then not saving any selection in custom theme. Any suggestions?
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