In Contents panel, I notice some of my topic icons have little Plus (+) signs. They are not twisties -- what do they mean?
Probably Relevant: I am trying to use RH 2022's version control features for the first time. I have it set up enough that a RH file structure has appeared in my SharePoint site. But I notice there are no FILES showing up in SharePoint. And in RH, it's all the FILES that have the plus signs. So I bet I could figure this out if I knew what the plus signs mean...
I've never seen it in versions 2019, 2020 or 2022. Noting your other thread it does suggest something to do with source control. You could prove it by creating a simple test project and putting it in source control.
Beyond that, I can only suggest trying Adobe Support. See https://helpx.adobe.com/contact/enterprise-support.other.html#robohelp for your Adobe Support options. The email link firstname.lastname@example.org is recommended as it reaches a team dedicated to Technical Communication Suite products including RoboHelp.
My site www.grainge.org includes many free Authoring and RoboHelp resources that may be of help.
Possibly it means the files need to be checked in (added) to source control? Is there a Check In option in the menu? Or right-click on one file and look for that to see what it does? I've never used source control with either New UI or Sharepoint, so just guessing here.