I just spotted something after updating Brave this evening. Included in the update was the version bump to Chromium 69 - and when I re-launched Brave, there was a popup saying "Here are the new features in Chrome 69", and clicking on it took me to a Google-hosted page listing all the ways in which Chrome 69 phones home for a safer, faster, more convenient browsing experience.
After having just posted here, it was...disconcerting. I'd like to give you guys the benefit of the doubt, but you may want to check a fresh update & relaunch from 0.23 to 0.24. I doubt I could reproduce (I've already clicked past it, and it was only on the first re-launch), but for a moment I was pretty confused about what browser was open (in fact, the only reason I'm certain it's Brave is because I just double-checked my Chrome and it's still on 0.68). Brave 0.24, V8 6.9.427.23, rev f657f15, macOS x64 (10.11.6 El Capitan), OS Release 15.6.0, Brave Sync v1.4.2, libchromiumcontent 69.0.3497.100.