Firefox 10.0.2 strange behavior

Question

Mozilla Firefox

I enter data into a text field on a web form, then, without saving them, I press F5, reload the page. Strangely, the data I entered after that continues to remain in the text field, that is, in fact, the page does not reload.
And if you refresh the page not through F5, but through the query string in the browser (by putting the mouse focus there and pressing enter), then the page actually reloads, and the data I entered is no longer displayed.
Chrome on a similar page behaves correctly, reloading the page in both cases.
Is this a Firefox bug? Or just a feature with a deep meaning?

Answer 1

This is a feature. I have the same thing in FF12.
And why do you think it's a bug? This is great: I accidentally updated the page and nothing has changed (except that the values ​​\u200b\u200bare removed from input type = "password")

Answer 2

This is a feature of all versions of ff, it removes the entered data only at f5 or as you said when focusing on the address + enter (it is understood that you want a new blank page) and on f5 everything that you entered remains, in case something just freezes /disappeared/underloaded.