This has happened to me enough times that there must be something to it.
The Excalibastard’s crit is supposed to provide guaranteed freeze of an enemy (not including the big bosses). Then when you melee the frozen enemy, you get the cryo singularity/nova effect.
Except that sometimes you don’t get the freeze on crit. And I don’t understand why. I was using the Ex (level 65; same level my character (Nisha) is at) for some mobbing last night and having fun chaining freeze-melee-freeze-melee kills together. It was even working on badass enemies, which isn’t always the case. But then the crits stopped working at some point. The freezes became intermittent (even though I know I was getting crits, because I was getting the “critical” text on impact) as well as the singularity/nova effect. It seemed to mostly work fine on regular enemies, but it didn’t work at all against badasses. Quitting and restarting the game did not return the Ex back to its earlier efficiency.
Anyone understand why this is happening? What am I missing here?