Otherwise Samsung won't know it's a bug to be fixed.
Purchased the Samsung KU7500 UHD tv, connected Foxtel to HDMI 2, Topfield PVR to HDMI 3. While watching Foxtel, the Topfield turned on for a arranged recording & in doing so changed the Samsung TV HDMI input to HDMI 3. I decided to trial things by watching Foxtel on HDMI 2 & turning top field on manually. Again it switched HDMI inputs to the Topfield. How can I stop this, it only happens when the Topfield turns on?

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