Channel Guide displays Randomly instead of in sequence

Recently my Channel guide began displaying channels Randomly. If I click on Live TV as an example, a channel in the 300 range may appear, but if I forward the display it may go backward to the 200 range or forward to the 500 range.  Completely random, does not let me select the next or previous sequential channel. This just started a day or two ago, April 27 2024.  Before everything was sequential !