This issue appears to be SOLVED in both Firefox 59 and IE 11. Important tips:
1.) You must enter the name of the channel and the name must be alpha-based (letters only.) than hit Enter.
2.)The letters must match to how the guide abbreviates the channel. For example, I started to type "Ten" for Tennis channel and got the results after hitting enter. Typing the whole world "Tennis " nor the channel number for Tennis does not work. The jump to channel is based on the abbreviated channel name found in the online guide only at this time.
Satch