A new version of ONLYOFFICE, an open-source productivity suite for Windows, macOS, and Linux, is available to download. ONLYOFFICE 7.5 includes the usual
Not good for real multitasking. A combination of Windows and tabs is way better. Also there's no reason to have a single application that you've to open to then create whatever document you need. Just split the damn thing into multiple apps like every other productive office suite.
That options exists, has been there for a while but its not enough. Read the thing you replied to, not having real multiple apps means things such as Window taskbar combination doesn't work as it should.
It's still a single binary, but it opens all documents as individual windows, not tabs. You can also launch writer/calc/draw etc from their individual icons in the applications menu and they all open and behave like standalone apps. At least, that's how it is on a normal Linux install.