tracking QTR77(OTBD-KIAH)


I’m using Firefox with Windows 7 and have noticed today and on several other occasions that once this flight gets into NE OH (Cleveland Center) airspace, that the track does not progress evenly or even backs up to a previous position on an update. At some point as it gets into SW OH(Indianapolis Center) airspace, it jumps ahead to its (I assume)correct position (a matter of 50-100 miles) in one update. Why is this happening?