Time Rift Canceling Clicks Purposeful?

So when wearing time rift and canceling a spell, there is a % chance for the spell to be recast. However, when the spell recasts, it cancels clicks. For example, if I cast bomb on archer, and it recast, but I had already clicked left-right to try to get an arrow storm, it will reset the left-right and when you try to finish the spell, it will only have detected your left click. I'm wondering if this is purposeful or if it is an un-thought of mechanic, because it really is annoying when using orange lily and having this happen, and then running out of mana extremely fast.

 

It's probably done purposely for balancing reasons.

It's also kind of a game mechanic, like you cant spam meteor until it hits the ground, like I said, it's like that probably for balancing reasons.

Just imagine how broken it would be to just spam spells whenever you want, and cast extras with no penalty.

 

It's probably not purposeful that it cancels clicks.

 

Maybe an unintended overlooked mechanic?