Something is fishy, since all this based on chance can't really prove anything.
But right now critical chances are less than what it used to be, You can simply understand if you are getting way less crits.
Moreover i have a guess for the reason, i don't know if it is useful for developers:
On crew skills window(defaults B) my 46 level Nadia has "+69.0% Critical rate for crew skill tasks".
On Companions&Contacts window(defaults N) i can click Nadia, and on right top side there is an Influence bar. When i mouseover the bar, it says "+23% Critical rate for crew skill tasks."
I realized this UI bug when patch 6.2 hit for the first time, Didn't really checked before.
So there is obviously something wrong. Which might possibly related to this critical chance drop feeling.
Since there is obvious visual bug, it may have effect on calculations as well. It might be a good starting point/pointer for troubleshooting the problem we "feel". Again we simply feel it because can't simply prove numerical bug when there is RNG involved.
Edit: some typos
Edit2: I would like to have a confirmation or two if your companions shows different numbers on those windows as well, if possible.