When holding the rune button and trying to use assigned runes, such as blink, the game instead defaults to rolling if it is bound to x(ps controller) when the character hits walls or ledges, also after having casted a fireball. So If I cast a fireball and try to blink away as soon as possible(still holding L1), having blink bound to x, it will instead roll. Since L1 is a designated rune button I think it should always default to casting blink in these circumstances, if you want to roll you can simply stop holding L1.