The Chosen Ones

On a side note I tried the boss when I knew his spells and it really didn't help, he vanished and I ran around and then stopped when he reappeared and then died. So I don't know if I can beat him with no effect indicators.

Edit: I just remembered another problem I faced, in chapter 3 of the campaign during the invisible path with the blooming yellow and blue things, I could not see them so I had to open the campaign and use it to find my way through.

As I recall also in chapter 3, I saw these blue and yellow things and then took a break and loaded my save. And thats when they were gone, I think these missing special effects might have something to do with loading the campaign and them not working. As in Chapter 2, and 5 I couldn't finish them in one sitting so both I had to reload. And in Chapter 3, I could almost finish it in one sitting so i got up to a point where special effects are shown and on reloading they were gone.

Sorry again about the long wall of text.
tl:dr - Loading the game might have something to do with these special effects?