diff --git a/changes/29.0.3.md b/changes/29.0.3.md
new file mode 100644
index 000000000..9372a4175
--- /dev/null
+++ b/changes/29.0.3.md
@@ -0,0 +1 @@
+* Fix height of block quadrants (`U+2596`..`U+259F`) (#2240).
diff --git a/packages/font-glyphs/src/symbol/mosaic/teletext.ptl b/packages/font-glyphs/src/symbol/mosaic/teletext.ptl
index 21593c8fd..0305ce14e 100644
--- a/packages/font-glyphs/src/symbol/mosaic/teletext.ptl
+++ b/packages/font-glyphs/src/symbol/mosaic/teletext.ptl
@@ -43,7 +43,7 @@ glyph-block Symbol-Mosaic-Teletext : begin
 			create-glyph [MangleName : NameUni unicode] [MangleUnicode unicode] : glyph-proc
 				set-width MosaicWidth
 				include : ForceUpright
-				include : BlockMosaicPattern 2 3 : [pattern.split ''].map : x => x - 1
+				include : BlockMosaicPattern 2 2 : [pattern.split ''].map : x => x - 1
 
 		define [BlockMosaic23 unicode pattern] : begin
 			create-glyph [MangleName : NameUni unicode] [MangleUnicode unicode] : glyph-proc