I have a new HDR-FOX T2 with the latest firmware.
Yesterday I noticed that using find by genre sport misses programmes from ESPN (I am a subscriber) and BBC (for example, the snooker). These are correctly tagged as "sport" if you select them and press info - it seems more like a problem with not finding results on some channels.
I confirmed this wasn't confined to sports genre - it also failed on movies, with some channels not included.
However, today this is working correctly. Why is this? My reception on some muxes is a little bit poor, but the EPG seems to always be displayed correctly, with no gaps - so all programme and metadata seems to be present.