The option is not there in Preferences -> General. Please let me know, I dont like them opening in new tabs in the same window, I want them to open in different windows.
I run the Adobe Acrobat Pro, Version 2023.001.20174, and have the same problem. The version allows to tear the tab of the main document window to create a new window, but there is still not an option in preferences->general to check/uncheck open documents in tabs.
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