Focus Filter limited to full block — interruption mode not available

I'm using one sec on macOS. When I set up a Focus Filter (System Settings → Focus → Focus Filters → one sec), the only available option is full block. There is no way to select the interruption-based blocking mode for specific apps within a Focus profile.

Is this a known limitation, or is interruption-mode support for Focus Filters planned? Being able to configure the blocking mode per Focus would be very useful.

Happy to provide more details if needed.