Why is the camera view offset in play mode and how to resolve?

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:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By yshen

Following a tutorial on youtube and set up a camera2D that is static at (0, 0).
As seen in this link: Godot-editor

However, when I tried to run the scene in play mode. The view is unexpected.
As seen in this link: play-mode-view