Display status bar numbers as 1234 instead of 1,234?

On status bar, using {tf} for total number of files, can I get it to display 1234 instead of 1,234?

The format of the number is defined by the system-wide regional settings. If you change or remove the separator via Control Panel then the status bar in Opus will change accordingly. (It looks like you have to restart Opus before the change is picked up.)