JAL-1994 fix for broken tests

[jalview.git] / src / jalview / viewmodel / AlignmentViewport.java

diff --git a/src/jalview/viewmodel/AlignmentViewport.java b/src/jalview/viewmodel/AlignmentViewport.java
index 7bbe677..3c69961 100644 (file)
--- a/src/jalview/viewmodel/AlignmentViewport.java
+++ b/src/jalview/viewmodel/AlignmentViewport.java
@@ -1557,7 +1557,9 @@ public abstract class AlignmentViewport implements AlignViewportI,
     }
     else
     {
-      if (alignment.getHiddenSequences() != null)
+      HiddenSequences hiddenSeqs = alignment.getHiddenSequences();
+      if (hiddenSeqs != null && hiddenSeqs.hiddenSequences != null
+              && hiddenSeqs.hiddenSequences.length > 0)
       {
         iSize = alignment.getHiddenSequences().getFullAlignment()
                 .getHeight();