Sap is considered a "Sap" effect now...lol, but the stuff that broke it before will still break it, warrior bersk rage etc

Now that you mention it though the charges are technically roots...it holds you in place, albeit very temporarily, just like Imp Spamstring and Imp Wing Clip procs are roots but the non-imp versions are snares...then again a "Snare" holds you in place...ugh so many fucking technicalities, but yeah, Boars are a temp snare/root/wtfever, bearcharge is same + silence, and Warr charge is a 1sec stun, intercept is 3sec stun, lol