fixed cleanup preceding block elements, regex was using [] instead of ()
diff --git a/system/libraries/Typography.php b/system/libraries/Typography.php
index 0c4a978..a4d1e35 100644
--- a/system/libraries/Typography.php
+++ b/system/libraries/Typography.php
@@ -196,9 +196,9 @@
// Clean up stray paragraph tags that appear before block level elements
'#<p></p><('.$this->block_elements.')#' => '<$1',
-
+
// Clean up stray non-breaking spaces preceeding block elements
- '#[ ]+<('.$this->block_elements.')#' => ' <$1',
+ '#( \s*)+<('.$this->block_elements.')#' => ' <$2',
// Replace the temporary markers we added earlier
'/\{@TAG\}/' => '<',