JAL-1858 null img when doing full repaint of wrapped alignment

diff --git a/src/jalview/gui/SeqCanvas.java b/src/jalview/gui/SeqCanvas.java
index 858b8c8..8707e9a 100755 (executable)
--- a/src/jalview/gui/SeqCanvas.java
+++ b/src/jalview/gui/SeqCanvas.java
@@ -1002,6 +1002,7 @@ public class SeqCanvas extends JComponent implements ViewportListenerI
      */
     if (av.getWrapAlignment())
     {
+      img = null;
       av.setSearchResults(results);
       repaint();
       return;