Folded #region shows repeated name after #endregion

When using C# regions, if the region's #endregion directive includes text (a "pp-message" token according to the C# specification), this text is visible when the region is folded. When folded, it will appear like so: The bolded Region name [A] is from the #region directive, and it's the gray bordered blob that represents and will expand the entire region. Region name [B] is the text following #endregion, and it is visible in plain black, as it'd be if it was unfolded alongside #endregion.

It doesn't matter whether the region label is the same or not in both places; the C# specification specifically says that "Matching #region and #endregion directives may have different pp-messages." The issue is simply that anything beyond #endregion in its line doesn't appear to fold, and that the entire line with #endregion in it should fold.