Betfair have listed the 15:05 race at Wetherby as "Hcap Chs Listed" or (if the markets were loaded later in the day) "Listed Hcap Chs".
This race type does not appear on their list of supported race types, so TBE will not recognise the race IF you have are filtering the races by Race Type (on the Event tab). If you have not filtered the races, then the race will appear as per normal.
This race type will be added to TBE in the next release.