The first video demonstrates how spellslinger doesnt give you stacks while you have a shield active and taking damage.
The second video demonstrates how rem can enter tunnels while taking damage with a shield active.
Holiday's low health ult voiceline gets triggered as soon as you cast your ult instead of triggering as soon as you hit someone. I assume this is a bug since her normal ult voicelines get triggered when you actually hit someone with it.
problem started happening several days ago. problem happens regardless of how i'm trying to enter mentioned modes. through the play menu or through the "test hero" button