Index: qt-everywhere-opensource-src-4.7.4/src/3rdparty/harfbuzz/src/harfbuzz-thai.c
===================================================================
--- qt-everywhere-opensource-src-4.7.4.orig/src/3rdparty/harfbuzz/src/harfbuzz-thai.c	2015-06-23 18:38:36.906722307 +0200
+++ qt-everywhere-opensource-src-4.7.4/src/3rdparty/harfbuzz/src/harfbuzz-thai.c	2015-06-23 18:41:11.564777992 +0200
@@ -259,6 +259,7 @@
         for (int lgi = 0; lgi < lgn; lgi++) {
             if ( rglyphs[lgi] == 0xdd/*TH_BLANK_BASE_GLYPH*/ ) {
                 glyphString[slen++] = C_DOTTED_CIRCLE;
+		item->attributes[slen-1].dontPrint = true; // FIXME this will hide all dotted circle
             }
             else {
                 glyphString[slen++] = (HB_UChar16) thai_get_glyph_index (font_type, rglyphs[lgi]);