So just curious

Just curious as to why they changed the way Hellcat Wasitguard interacts with the grenades on cluster arrow and didn’t change the tagline on cluster arrow reclassifying that particular rune and changing the language so that it doesn’t say “grenade” I just feel if they are going to start excluding things from certain items that the language of the the skill shouldn’t make you believe that it might work for new or returning players it seems really counterintuitive…