Prefab Instance changing when loading scene in editor

For some reason when ever I load one of my three scenes which share a prefabbed ui, three elements of the ui (canvas game objects, with canvas group components) switch their anchor points from center/middle to the bottom/left preset and get set to seemingly random positions. If I revert the prefab they go back to their intended positions/anchor. It only seems to happen with these three elements. The elements in question are parents of text fields which display "Mission Success", "Mission Failure", and "Repairing Ship." The only time I access the canvas groups in question outside of the editor is in a script which sets their alpha values to make them visible/invisible when appropriate.

I have no idea what's causing them to change when I load up a different scene, and I can fix it by reverting to the prefab, but its becoming very tedious to do this for every scene before building to test out the game.