#define wxRICHTEXT_USE_OWN_CARET 0
// Switch off for binary compatibility, on for faster drawing
-#define wxRICHTEXT_USE_OPTIMIZED_LINE_DRAWING 1
+// Note: this seems to be buggy (overzealous use of extents) so
+// don't use for now
+#define wxRICHTEXT_USE_OPTIMIZED_LINE_DRAWING 0
/*!
* Special characters