“Close other tabs” menu on the current tab
In the "Documents" app, if you open multiple pdf files and touch the currently open tab, the "Close other tabs" menu appears. So, you can easily organize unnecessary tabs except for the pdf file you are currently viewing.
However, the "Goodnotes 5" app shows serious inconvenience and inefficiency in opening a new window, removing unnecessary windows, and then finding and opening the required pdf file again.
Thanks for sharing your feedback. In the meantime, please try disabling the ability to automatically open documents as new tabs in GoodNotes > Menu > Settings > Document Editing. You can still open documents as new tabs by tapping on the drop down arrow next to their name in the library view. The best way to open a previously opened document is from the search tab in the “Previously Opened Documents” section.