Hey!
We’ve identified the problem, and the fix is already on its way.
Upon updating to version 5.146.0, you would have to clear your User Data one last time, after which storage usage will return to its minimum values.
The cause of the User Data explosion was due to a miscommunication with Google’s WebView API, which we use to display the charts throughout the app. This was causing the WebView to create duplicate files under the User Data category repeatedly.
We only use the User Data cache to enhance the experience in some way, like saving network traffic, shaving off milliseconds for some requests, etc.
Regardless, we want to thank all of you for contributing information, which helped immensely in solving this.