Fix tracker string bug for Bar/ColumnSeries with ItemsSource binding #333

CHANGELOG.md

@@ -24,6 +24,7 @@ All notable changes to this project will be documented in this file.
 - OxyPlot.Metro project (superseded by OxyPlot.WindowsUniversal) (#241)
 
 ### Fixed
+- Bar/ColumSeries tracker format string bug (#333)
 - Fix exception for default tracker format strings (#265)
 - Fix center-aligned legends (#79)
 - Fix Markdown links to tag comparison URL with footnote-style links.