Tempest rush bug?

Playin tempest rush with the new set, and there is an issue with it.
When starting a new GR, and whirling away i do almoust no damage and get 0 toughness from set until i release the button once. After that i insta kill all mobs (when speed farming) and have 0 tougness issues. This happens in every single new GR i do.
Not sure what the problem is. Anyone know why whis happens? Seams it does not register whirling until stopping at least once.

Cast SW first, then TR. TR doesn’t recognise the bonus otherwise.

I always cast SW first, than epiphany and then i channel
Sometimes only Sw and channel, so there is something not right.

TR is bugged anyway right now, this seems to be another problem for some at least.