Poppy ult bug(?)

I've noticed a few times recently where attempting to snap cast my ult after recovering from a disable it won't snap cast and just starts winding all the way up. It won't fire until I click when it does that.

I play quick cast with no indicators on, so having to click at all is a bit weird, but the full windup has been detrimental a few times as well.

Has this happened to anyone else?