This is completely normal. Android Studio will always download the last project you worked on. If Android Studio loads, you can cancel the project to go to the Welcome screen. In addition, if the project is fully loaded, you can use:
File → Close Project
to go to the welcome screen. If you want to run the welcome screen without downloading the latest project, follow the link:
File → Settings → Appearance and behavior → System settings → Cancel the “Reopen the last project at startup” checkbox → Click “Apply”
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