I'm using the API to update presence from a web page using the JavaScript API. When I update, it reflects fine in the PureCloud browser UI, but does not update in the PureCloud for Chrome app.
Thank you for your question. The Developer Forum is focused on topics related to the PureCloud Platform API and other API integration points. It is not intended to be a product support forum. We, at Interactive Intelligence, are working diligently to launch a product-focused forum in early 2017. We know this is still a few months off in the future, and want to make sure that your questions are answered quickly. Today you can use the PureCloud Resource center by visiting https://help.mypurecloud.com/ for product documentation, guides, videos, and other great product content. If you are unable to find the right materials or have your questions answers you may contact PureCloud Product support. Contact information can be found here: PureCloud Support.
it reflects fine in the PureCloud browser UI, but does not update in the PureCloud for Chrome app
That sounds like a product issue with PureCloud for Chrome, not an API issue since the API request works correctly.