How to disable "Welcome back!" message upon document open in Microsoft Word (macOS)?

Suddenly today, when I open a Word doc, I'm greeting with an irritating "Welcome back!" message that points strangely to the right edge of the screen.

When I hover it, the text content changes to "A few seconds ago" (or presumably whenever I last opened the document). When I click it, it disappears and scrolls the document apparently to where last I viewed the page. If I ignore it, it seems only to disappear by scrolling the page.

Why does it point to the right edge of my screen (there's no UI there)? How might I disable this distraction? Thanks.

• Microsoft Word for Mac Version 16.26 (2019)
• macOS Mojave Version 10.14.5

1 Answer

I have moved the bundles

setupui_bundle.bundle
OUIWhatsNewBundle_mac.bundle
OfficePrefsUI.bundle
ExperimentUI.bundle

to the desktop and have restarted Word. It has not shown up since then. I am not sure if something elso broke, please check and give feedback. Many thanks.