=== modified file 'src/libnrtype/Layout-TNG-Compute.cpp'
--- src/libnrtype/Layout-TNG-Compute.cpp	2015-06-22 10:10:30 +0000
+++ src/libnrtype/Layout-TNG-Compute.cpp	2015-07-06 13:28:11 +0000
@@ -1119,6 +1119,7 @@
  */
 unsigned Layout::Calculator::_buildSpansForPara(ParagraphInfo *para) const
 {
+    PangoLanguage* cache_pango_language_th = pango_language_from_string("th"); //Cache the pointer.
     unsigned pango_item_index = 0;
     unsigned char_index_in_para = 0;
     unsigned byte_index_in_para = 0;
@@ -1289,6 +1290,10 @@
                         std::copy(clusters.begin(), clusters.end(), new_span.glyph_string->log_clusters);
                         /* glyphs[].x_offset values are probably out of order within any log_clusters, apparently harmless */
                     }
+                    else if /* In Thai. And sorting ligatures would break the rendering of U+0E33. So do nothing. */
+                        (cache_pango_language_th != NULL
+                         && cache_pango_language_th == para->pango_items[pango_item_index].item->analysis.language) {
+                    }
                     else {  //  ltr sections are in order but glyphs in a log_cluster following a ligature may not be.  Sort, but no block swapping.
                         const unsigned nglyphs = new_span.glyph_string->num_glyphs;
                         unsigned i, j;