Canvas is scrolling on drag and select

[therealharshit]

Description

When we try to select a block using drag and select, the canvas is scrolling which is making it difficult to select the block.

Expected Behavior

The canvas should not scroll when we drag to select.

Vedio

scroll-on-select.mp4

How to Reproduce

1. Drag on canvas to select a block.
2. You can see the canvas scrolling, making it difficult to select the block.

(Refer to the vedio for more info)

Console log Errors:

No console log errors

Environment:

• Operating System: Windows
• Browser (if applicable): Chrome
• Version of Software/Project: [e.g., v1.0.0]

Checklist

• I have read and followed the project's code of conduct.
• I have searched for similar issues before creating this one.
• I have provided all the necessary information to understand and reproduce the issue.
• I am willing to contribute to the resolution of this issue.

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[therealharshit]

@walterbender this issue is on the master branch, I think some recent changes has caused this issue.

[walterbender]

Yes. Not sure which of the changes related to dragging on the nav bar broke things, but I suspect it was one of those changes.

[therealharshit]

Yes. Not sure which of the changes related to dragging on the nav bar broke things, but I suspect it was one of those changes.

No it's not related to dragging on nav, this issue was there before that fix.
@walterbender I am working on it.

[therealharshit]

@walterbender it was this b5be318 commit which caused this issue, I have made the required changes to it to fix this issue.
Please review it in my PR #4064 .