PRIVACY ISSUE
Please provide a brief summary of the privacy issue.

VERSION:
Chrome Version: Windows 7 - November/December 2017

REPRODUCTION STEPS
Setting up a temporarily Google account of a third person on a Chrome installation that has never been previously associated with any Google account of the computer owner, this takes to unintentional snatching of ALL the sites frequented by the unaware (and careless) owner in his daily use in 'open' mode, with all related associated passwords, when available.
Later, if after the end of his work the temporary user removes his account, the owner will find everything of his own apparently deleted, and the browser cleaned up as it was first installed.
BUT, in fact, everything is simply reabsorbed into the temporary user's Google account, because Chrome apparently assumes that everything he finds there is always data owned by the current account.
So a safe version will never be available until you can use it without a Google identity ...