FOP uses an incorrect order of ET/EMC operands in some cases:
BCD
BT
[...]
EMC
ET
Correct would be:
BCD
BT
[...]
ET
EMC
[The last open element must be closed first]

diff --git a/src/java/org/apache/fop/render/pdf/PDFContentGenerator.java b/src/java/org/apache/fop/render/pdf/PDFContentGenerator.java
--- a/src/java/org/apache/fop/render/pdf/PDFContentGenerator.java
+++ b/src/java/org/apache/fop/render/pdf/PDFContentGenerator.java
@@ -270,10 +270,10 @@ public class PDFContentGenerator {
     /** Indicates the end of a text object. */
     protected void endTextObject() {
         if (textutil.isInTextObject()) {
+            textutil.endTextObject();
             if (this.inMarkedContentSequence) {
                 endMarkedContentSequence();
             }
-            textutil.endTextObject();
         }
     }