UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36

Steps to reproduce the problem:
1. Press F12.
2. Enter for (var i = 0; i < 1e7; i++) {}
3. Press Enter.
5. Enter some text within the console.
6. Press Up.
7. Press Down.

What is the expected behavior?
The entered text will be restored.

What went wrong?
The entered text will not be restored. The entered text is lost.

Did this work before? N/A 

Chrome version: 50.0.2661.94  Channel: n/a
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: Shockwave Flash 21.0 r0

Some code will take a while to execute (or the page does something already and the evaluation waits for it to finish) and you may lose your entered code (code be a lot of code, or could be a single line) because you accidentally pressed Up or Down or whatever.
If the console works (you can type) while the page is busy, it should work in every aspect (save the currently typed text and restore it accordingly).
It happened to me a significant number of times where my entered code got lost. Actual evaluation should not be the signal to save or not save any input.