Perhaps it's a move to nudge me toward Safari and its fancy new favicons. Or maybe it's just a bug. Whatever the case may be, the beta of MacOS Mojave has broken a small but important part of Chrome: Checkboxes. Without checkboxes, I can't, for example, conduct my online banking in Chrome or use CNET's content management system. Any web form where I need to check a box is unworkable.
I installed each iteration of the Mojave beta with the hope that Chrome's checkboxes will return, but I'm now on the fourth beta of Mojave (MacOS 10.14), and Chrome's checkboxes are still missing. Thankfully, there's an easy fix. Two, actually.
Chrome checkbox extension
Install the Mojave Checkbox-Fix extension and you'll no longer be singing the missing checkbox blues. The extension works by changing the zoom-level of each page to 1.000001, which allows the checkboxes to appear. For some reason, they are invisible at Chrome's default zoom level but appear at any other zoom level.
Zoom to the rescue
If you don't want to install the extension, then you can just just zoom in or out on a page with missing checkboxes and they'll appear. You won't even need to refresh the page. Just hit Command-plus or -minus. Or to go View > Zoom In (or Out).