The Beta channel has been updated to 19.0.1084.17 (Platform versions: 2046.20.0) for Chromebooks (Acer AC700 and Samsung Series 5). See more info in the Dev post. If you find new issues, please let us know by visiting our help site or filing a bug. Interested in switching channels? Find out how. You can submit feedback using ‘Report an issue’ under the wrench menu.