Thank you everyone for your continued patience! Apple just released the macOS High Sierra 10.13 Supplemental Update. This will fix the cursor issue with InDesign on macOS High Sierra. Please go to the App Store to update.Sumit Garg commented
This issue has been fixed via 10.13 "supplementary update" version 10.13 (17A405) and released version of macOS 10.13.1.
This fix was not part of 10.13.1 beta version. However, this is available in 10.13.2 beta versions.
So, If you are still facing this issue please upload a screenshot of macOS version. You can check your version using "About this Mac" dialog and click on version number of see exact version number.Sumit Garg commented
Thanks for sharing screenshot.
Based on your screenshot it seems you are still on 10.13 without "supplementary Update".
Once your update is successfully applied you will see the following string "Version 10.13 (17A405)".
So, please try to update your macOS again using App store. Only this update has the required fix for now.