We are facing the below issue with Sitecore 9.3 where the Target dropdown is blank for non admin users and it has the correct 3 values for the content authors where Administrator checkbox is checked. We have tried the below but with out success.
- Rebuild Core index
- Adding new versions of /sitecore/client/Applications/Dialogs/InsertLinkViaTreeDialog/PageSettings/Targets and child items
- "Target" dropdown in Internal Link options not populating in Sitecore 8.2 Update 3
The only thing that worked for me is commenting the following line in Sitecore.Speak.Applications.configBut the Adding Email to the link option is missing in the "internal link.aspx" so due to business restrictions, we could not use the other dialog.
<override dialogUrl="/sitecore/shell/Applications/Dialogs/Internal%20link.aspx" with="/sitecore/client/applications/dialogs/InsertLinkViaTreeDialog" />