I use the “short categories“ preference setting so in a transaction, the category field only shows the last sub-category, rather than the entire category tree.
In split transactions, the short preference setting is ignored, and, the field is left justified. As a result, I can only see the top category and maybe one subcategory.
Either honor the short category preference, or at least, right justify the field so I can see the last sub-category on the far right of the field.