Great to hear that, but that doesn't help, when you manually want to enter quotes from printed books you don't get as a PDF. And by the way: quotes and notes are different things and should be handled on different tabs.

I didn't suggest this, because other tools do it that way. (Although Citavi does it this way.) But because I think, that these are logically two different things.

E.g. when I make notes for a title, from whom I borrowed it, when I have to give it back, its availability in libraries (with shelf-marks), etc. I store it in notes, because these are notes for a title, that have nothing to do with the title itself.

But quotes are part of the title itself, that should not be mixed with notes about it. And in the quotes part there could also be templates, that allow not only to save the quote, but also the pages, notes for that quote (e.g. see also). In the notes field you have to enter all that manually and use different layouts.

And last but not least, it is very annoying to search quotes between notes and vice versa to search notes between quotes.

Therefore I think, different tabs for quotes an notes would be a great improvement. Not because others do it that way. I agree, that this shouldn't be a reason. But because it is better.

In the Zotero PDF reader, you can highlight sentences you want to quote, and these will automatically be added to a note. You can later click the Insert Note button from the Zotero tab/menu in your word processor to add them to a manuscript. You can also add comment bubbles to a PDF and type other comments, or you can add a note to an item manually and add comments/pasted quotes.