Hi - I was playing around with Mordo in BGs VS serpent and realized that the true focus he gains on special activation is not being nullified by Mordo's block.
Mordo's sig states:

So blocking Serpent's specials should remove the true focus and replace it with a detonate buff since it is a true-type buff (right?). Tested it in practice mode with my serpent and I can't get any nullify at all. With my Mordo at sig 20 there's around 83% chance to remove it on each hit of the special (7 hits on sp1 and 4 on sp2) so that's very unlikely.
Out of the specials, letting Serpent hit my block is also doing nothing. Tried with sigil witch and she nullifies the true focus parrying serpent special with no problem.
Any thoughts? am I missing something? wasn't true focus added to the true-type buffs Mordo can interact with? is this a bug?
Thanks for the help!