As part of Section Translation (T243495), we plan to support a new mode for Content Translation where users can translate a single section (T234323), as a key step of the Section Translation workflow. The approach followed for the initial support for this was to load the whole article and hide other sections. This is an approach is not ideal but it is safe for cross-section content such as references that are added by name with their contents defined in another section.
This ticket proposes to explore ways to safely resolve cross-section content, to minimize the additional content loaded. For example, we can consider expanding references to their full definition for the selected section. It may be relevant to study how Visual Editor supported section editing on mobile, and early explorations from the Parsing team (1) (2).