JAL-2842 remove infinite loop in cursor move

diff --git a/src/jalview/gui/SeqPanel.java b/src/jalview/gui/SeqPanel.java
index 2223ee5..dbbf510 100644 (file)
--- a/src/jalview/gui/SeqPanel.java
+++ b/src/jalview/gui/SeqPanel.java
@@ -363,8 +363,11 @@ public class SeqPanel extends JPanel
       int original = seqCanvas.cursorX - dx;
       int maxWidth = av.getAlignment().getWidth();
 
+      // TODO: once JAL-2759 is ready, change this loop to something more
+      // efficient
       while (!hidden.isVisible(seqCanvas.cursorX)
-              && seqCanvas.cursorX < maxWidth && seqCanvas.cursorX > 0)
+              && seqCanvas.cursorX < maxWidth && seqCanvas.cursorX > 0
+              && dx != 0)
       {
         seqCanvas.cursorX += dx;
       }