mIRC cannot remember -f switch after click Connect icon on toolbar.
1. Open Favorites (ALT+J).
2. Make sure Popup Favorites on connect is selected.
3. Close via Ok.
4. Write example: /server -f localhost 6667.
5. Disconnect via Connect icon on toolbar or /quit or /disconnect.
6. Click on Connect icon button or use /server (but empty now).
Favorites is showing.
Interestingly /server remembers the -l switch so I think -f should as well. I have not checked the -poc switches.
Checked on latest clean beta.