@Richard King
I think the 'why' is that all too often, ego trumps reason (at Adobe as well as in the rest of the world). If someone makes a programming/design mistake, they'd rather protect their ego, insisting they were right, rather than listening to users and admitting they were wrong.

This same issue is also present when using the shape options in the Essential Graphic's window's New Layer menu. To get that fixed as well, please vote here: https://adobe-video.uservoice.com/forums/911233-premiere-pro/suggestions/45693763-replace-new-layer-menu-in-eg-with-an-intelligent

I would love to know why it is the way it is and why it isn't the same as all other adobe products. that's actually worth it to me. to simply hear from the product team on why? If they can't come up with one then just change the bloody thing to match your other products. I mean, just tell us. there must be a reason why?

Your greed is catching up to you. The premiere mask functionality has been around for a long time. I believe you made the masks challenging to use on purpose back in the Creative Suite days to make sure people had to buy a license for after effects, and I don't think the code has changed since then, even though your license model is different.

How is this not in the software already? Please get this fixed asap. This is a daily annoyance. EVERY time I use square masks, I struggle with this. EVERY time. And square masks are used all the time. Please just fix it!

Working with masks and keyframes is the worst thing that Premiere provides us with. What is the peculiarity of making the principle of working with masks as in AE? There should be a single management principle. Now in one program (Pr) it is possible so, in another (AE) it is completely different. We need to come to a single decision, then it will be easier to master the skills of high-speed work.

I've left this same suggestion as well. It is inconceivable that anyone would design a mask this way. Talk to the Illustrator, Photoshop and After Effects teams at your company. Go into any of these programs and draw a box. Then make it work that way in Premiere. Please.

Man. I have to agree with Zena Grey here. This is so strange for such a professional application to lack such a basic tool. If you can't fix it, can you at least explain to us here, in this thread, why this doesn't exist?

ADOBE-- LISTEN TO THIS HUMAN!!! A square mask should be LITERALLY THE EASIEST THING TO MAKE. We should not have to be eyeballing shapes that should be perfectly easy to create and complaining about this for YEARS. It is absolutely bonkers that I have been looking through almost a decade of message boards asking for how to create a perfect circle mask in Premiere and NO ONE HAS AN ANSWER. FIX THIS!!!

Great suggestion. I would like to add that the devs should disable movement upon first touching the vector point in a mask or shape.

Every single time I try to select a vector point, it moves that point unless I keep my mouse completely still. This is very annoying. It's been years of me selecting each point like I'm performing surgery.

且つマスクアニメーションを数値入力で制御できると尚良しです。

Adobe製品は統一した操作感を売りにされてたと思います。ぜひ実現していただきたい機能です。

正方形もですが、ポイントではなく、辺を動かせるようにしてほしいです。ポイントを二カ所選択する際に少しずれて線が斜めになることが多いので。
また、マスクの初期設定は、ボカシ10ですが、0をデフォルトにして欲しいです。

時折使う際に、とても不便さを感じ、そうい時って、Premireに対する親近感が遠くなります。
是非正方形のマスクができるようにお願いします。

早急に改善お願いします

せっかく、Adobe製品は、連携できるのに
こういう大事な所、ソフトによって使えたり、使えなかったりするのが残念です。

　ソフト連携強化のためにも、是非とも必要な機能だと思います！

他のアプリと動きは同じになるようにしてほしいですよねー

I hope it to behave the same as other applications.

直してほしいです！

これ ないと ものすごく不便です。
このせいで premiere 使わない時もあります。。
時間もかかるし。。

是非 そうきゅうにじつげんさせてほしい。

賛成です。是非実現して欲しい。

I also aspire