Alignment track - don't repack on drag unless in FULL mode

src/main/java/org/broad/igv/sam/AlignmentTrack.java

@@ -414,7 +414,7 @@ public void receiveEvent(IGVEvent event) {
                 });
             }
         } else if (event instanceof ViewChange viewChange) {
-            if(viewChange.type == ViewChange.Type.LocusChange && !viewChange.panning) {
+            if(viewChange.type == ViewChange.Type.LocusChange && !viewChange.panning && getDisplayMode() == DisplayMode.FULL) {
                 packAlignments();
             }
         }