Every time I launch Chrome on one of my machines, it complains that an extension called "Privacy Test" has been disabled because of its dubiousness, reactivate/delete? I chose "Delete" every single time, and every single time, it comes back at the next Chrome restart. Apparently, it somehow managed to store itself into my Google account's sync data, because after several hours of googling apparently the only working way to get rid of it is to get a fresh Chrome install, not sync, then nuke all of the sync data.
If only there was a way to see what's actually in the sync data and manage it on a more fine-grained level instead of having only a single "delete all" button or, you know, maybe Chrome could actually just bloody uninstall the extension I ordered it to uninstall? Maybe by the next century the technology will actually be there.
You have malware... It's software on your PC which is installing this extension again every time it sees it not present. Creating a new Chrome profile probably just tricks it because it is still installing it into the old profile.
Nope, it's not, because it persists between clean Windows installs. In fact, using the chrome://sync-internals/ from the sibling comment, I can see a "Click&Clean App" in my Apps (not Extensions!), which has id "pdabfienifkbhoihedcgeogidfmibmhp" which id, if you open it in Google Store, leads to [0], which is a page for the Privacy Test extension. And I can't delete it from my profile, because Chrome let's you manage only Extensions, not Apps!
If only there was a way to see what's actually in the sync data and manage it on a more fine-grained level instead of having only a single "delete all" button or, you know, maybe Chrome could actually just bloody uninstall the extension I ordered it to uninstall? Maybe by the next century the technology will actually be there.