Nextcloud displays green checkmarks on desktop

I’m having an issue on Windows 10 Pro x64 (build 1803) with I think the Nextcloud desktop client for Windows is causing. Sometimes my desktop, which I’ve confirmed is not being synced in Nextcloud, displays green check marks on all icons. A similar bug, according to what I’ve googled, affects users of Onedrive (which I’ve disabled) and Norton (which I do not use), I have narrowed it down to my recent introduction of the Nextcloud client to my system. Reinstalling Windows did not eliminate this behavior.