We have enabled Tasks to be available on Status Reports. We created a Large String attribute (With an API Attribute ID) on the Task object, however it is not available for selection on the Status Report in the Modern / New User Experience (UX). String attributes show up correctly. Is this expected?
Release : All Supported
Component : Project Management
Large String attributes for Risks, Issues, Changes, and Tasks on the Project Status Report are not supported. (This includes both Plain and Rich Text Large String attributes). See Customize the Project Status where this is referenced on techdocs.
See Customize the Project Status (Section: Add Risks, Issues, Changes, and Tasks to the Project Status) for more details on Tasks Project Status functionality.