Anchor the canvas of the drawing to the document rather than the screen.

[hackerwins]

Description:

Anchor the canvas of the drawing to the document rather than the screen.

Why:

Recently, I opened a CodePair test with a few of my followers on Twitter. For now, even if the screen is scrolled, the shapes are drawn on the screen follow, but users felt awkward about this.

https://codepair.yorkie.dev/3amy7n

- 펜으로 그은 거는 화면을 움직여도 어딜 가든 따라오는군요 <- 요것도 버그 리스트에 옮기겠습니다.