Recurring Login Screen for OneDrive for Business

I have noticed this as well and for me I think it's because OneDrive is starting up in "personal" mode.  Apparently, it's in the system startup to run the batch file named OneDrivePersonal.cmd which sits in the same directory as OneDrive.exe (%localappdata%\Microsoft\OneDrive).  That batch file runs the command below.

start %LOCALAPPDATA%\Microsoft\OneDrive\OneDrive.exe /client=Personal

I have only recently noticed this so wonder if it's relatively new?  When it's been run you can also see a grey OneDrive cloud in your system tray, indicating it's waiting for someone to sign in using their personal account.  For me this sits alongside the blue (without the white outline) cloud that indicates I've signed into OneDrive with my Office 365 account.  See my figure below where my OneDrive for business is in the middle of sync, which it often does for no reason.

I am definitely interested to hears other's thoughts.  I am running the latest build 17.3.6743.1212.

Thanks, Bruce...