Repro steps: 1. Go to drive.google.com (log in if necessary). 2. Press the back button. Expected outcome: WebView goes back to the previous page. Actual outcome: WebView seems to get stuck on the same page. It seems that when the WebView gets redirected to https://drive.google.com/drive/my-drive, it keeps both the original and redirect URLs, so when it tries to go back, it just gets redirected again.
<rdar://problem/68370663>