I'm using Anime Studio Pro 7 and I started a custom size project at 640x440. Later, I needed to change the size to 200x200 to use as a game hotspot. Anime Studio wouldn't change window size correctly.
To get around it, I have to create a new project. Set the project setting to 200x200 first and then import my objects from the first project.
Custom Sizing after project created
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