Is the web UI for building assistants totally busted right now?

I am seeing such weird behavior in the web UI for building assistants and testing them in the playground with file retrieval. The files get uploaded, but if I refresh the page they disappear. Sometimes one file will display. Sometimes duplicates will. Sometimes the files show in the playground, sometimes they don’t. I’ve tried multiple browsers, clearing cache… no dice. Are there bugs in the UI right now? Are there also issues in the underlying API?