Quick cast + press and hold alt cast has a weird interaction (examplified by Graves' Grasping Hands)

[washroomAccessFor.30]

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!

 

[washroomAccessFor.30]

I've come to the realisation that this is not a bug but I was confused over quick cast type when I switched from MMB alt cast to press and hold. My Bad there.

However the reason this ability was the one I got confused about is due to the brief fraction of a second where the wall indicator flashes during quick cast. Quick cast with alt-cast being press and hold changes quick cast into behaving like instant cast with a pointless flashing indicator.

Shouldn't quick cast with press and hold alt cast cycle through the two cast types as long as the ability key is held? It's weird to set quick cast yet cast without letting go of the key. Maybe this ought to instead go into general gameplay feedback at this point...

At the same time, quick cast still has the description of 'cast when let go' so the fact that alt cast press and hold doesn't wait for letting go is a bug in a way.

Point is, I myself have put alt cast hold time to .25, and thus I think press and hold alt cast should cycle between the 2 cast modes as long as I hold the key when set to quick cast. This pseudo-instant cast nonsense shouldn't be.