I'm currently having issues with opening docx files from the Files app and I can't seem to figure out how to change the default. Right now, when I tap a .docx file, it opens the Google Drive app and prompts me to save it to my company's drive, which I obviously don't want to do. In the past, it would bring up a preview view like it does with PDF files. Is there some way to change the default app that I'm not seeing? I never had this issue during the iOS 11 betas.