Master Strikes

So I’ve been searching around for this for quite some time now.
Captain Bernard will not offer the option to train master strikes, I was able to learn them, now I cannot train Master Strikes at all, is this a bug, is there a fix?

They changed it, learning it for one weapon will learn it for all, then the option will disappear.

What?..
The whole point was to specifically train it, I thought there was an option to specifically train just master strikes?

I don’t know how much clearer I can be. If you have already learned master strikes for a weapon then it will be unlocked for them all. You cannot train master strikes any more afterwards.

Well, you can select “Training combat with a practice weapon”, let Bernard attacking you and train master strikes on those attack.
The only difference would be that you will not have the super slow down as when you learned the Master Strike.