A crash showed a white page and said nothing

If anything went wrong while a screen was drawing, the whole page went white. No message, no sidebar, no way back, and nothing saying whether what you had just typed was saved. Reloading sometimes fixed it, which made it look occasional rather than what it was.

There is a proper error screen now. It says something went wrong, offers to reload and to go back, and keeps the rest of the app intact around it. It also recognises one particular cause: when we ship an update while your tab is open, the piece of the app your tab reaches for may no longer be there. That is not a fault, it is an old tab, and the screen now says so and reloads instead of showing you a crash.

Downloading a file from Documents failed for everybody, on every file. The button opened the file’s address in a new tab, and a new tab does not carry your sign-in with it, so the server refused it, silently, in under three milliseconds, with an empty tab as the only evidence.

Downloads now go through the app itself, signed in, and arrive with the right filename.