8b541056f8a416395d49a9ebab285b6765eedbab
max
  Fri Oct 1 04:35:17 2021 -0700
fixing hgTracks crash after closing the highlight dialogbox and when
starting a search, refs #28268

diff --git src/hg/js/hgTracks.js src/hg/js/hgTracks.js
index 0f5a650..ae3cc70 100644
--- src/hg/js/hgTracks.js
+++ src/hg/js/hgTracks.js
@@ -131,31 +131,30 @@
         if (ele) {
             return ele.value;
         }
         return null;
     },
 
     getOriginalPos: function ()
     {
         return genomePos.original || genomePos.get();
     },
 
     revertToOriginalPos: function ()
     {
     // undo changes to position (i.e. after user aborts a drag-and-select).
         this.set(this.original, this.originalSize);
-        this.original = this.originalSize = null;         // not sure if this is necessary.
     },
 
     undisguisePosition: function(position) // UN-DISGUISE VMODE
     {   // find the virt position
         //  position should be real chrom span
         var pos = parsePosition(position);
         if (!pos)
             return position; // some parsing error, return original
         var start = pos.start - 1;
         var end = pos.end;
         var chromName = hgTracks.windows[0].chromName;
         if (pos.chrom !== chromName)
             return position; // return original
         var newStart = -1;
         var newEnd = -1;