I've the same Tv and the same issue.
Sorry are you using STB Emulator, or the Smart STB app?
So I did some testing. I tried 2 other providers (express and ipguys) and this issue doesn't occur. Seems this only happens with Epic.
I also tried it on a few android boxes and the same thing happens.
Do you guys not have Smart TVs? You can download, try before you buy, Smart STB if you have a Smart TV. Just look for the app in your TV's app store.
So the problem I'm having is when I change a channel in stbemu it doesn't go to that channel in the channel list, it always shows the previous channel.
I've tried many different versions of stbemu. I've posted a video for a better explanation