A family of Microsoft word processing software products for creating web, email, and print documents.
There are certainly many steps to move between an ongoing spellcheck and editing in the document itself. This is time-consuming, and other panes work the same (the Find / Navigation pane, for example), unfortunately.
You can send feedback to Microsoft using the Help > Feedback facility and/or via the portal at https://feedbackportal.microsoft.com/feedback/forum/fb6d67e3-301c-ec11-b6e7-0022481f8472 .