What I meant was:
1. Open a file whose content is "input()" with IDLE
2. F5
3. Type something but without pressing Enter.
4. Come back to the script (with input() still responding to keystrokes on the input line)
5. F5
6. Bug. (Results vary even on the same machine by closing and opening Python again, sometimes whatever you pressed in step 3 disappears, sometimes it just takes input, doesn't respond to commands similar (not equal) to "while(1): pass")