The formula box in the Canvas Apps editor very slowly analyzes code, and often reverts to previous input. I suspect that it is sending data to the server and expecting a response, but in doing so it REPLACES what I have in the box if I click out of it or attempt to save the app. It is extremely frustrating to spend a few minutes writing code and then see it all get erased because the syntax analysis couldn't keep up.
The box should NEVER, I repeat NEVER, change what I have typed into it with an older version. I don't care if it is wrong or hasn't been analyzed yet. I don't want to be losing work because it doesn't know how to behave like an input text box.