Graves Grasping hands Cast Types are Bugged

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Quick cast is suppose to work when the ability key is released. However the following clip shows Grasping Hands on quick cast moreso acting like instant cast & confirm cast acting differently depending on how quick the ability key is tapped.

As the clip doesn't show my inputs I need to describe them in order:

1. I cast Grasping Hands thrice while holding down the ability key during quick cast as shown, yet it is instant casting with a brief visual of the wall indicator as if the game is trying to act correctly but fails. Notice that the brief visual indicator is 90 degrees different than the actually casted wall.
2. Switching to confirm cast, I then tap the ability key and LMB confirm twice (1 per rotation). This is how it should work.
3. However, I then press the ability key for a little bit longer, really not that much longer at all, but it causes the similar instant cast with same visual indicator 'blink' for a brief moment.

It's possible other abilities are affected, including on other heroes. Or maybe it really is Grasping Hands only. I'm not going through them all in the hideout. Sorry but I can't always be not busy & free to test bugs for a video game. Too many abilities that may be affected for me to stand in the hideout and do that. Here's hoping it is therefore only this ability!