Fend vs footing edge bug

Judging by those echoes, it is a push: Pally pushes you back with a firm strike from a staff, disrupting your attack. You establish your footing once more. BUT footing edge does absolutely *nothing* to stop/mitigate those pushes (experimented both with a paladin and as a character against paladin). Also, enlarge doesn't work too, seems fend is ignoring size modificator, edges, haste, acceleration and anything else (and elf-champion season proves it very well). I suspect that malleability/evade also is ignored, and probably this code just wasn't finished properly OR, more likely, there is a bug that prevents some of this code to work right. Hope you'll take a look into it, thanks!