Previewing custom parameters?

Sorry if this has been asked/discussed before:

I just tried making a rounded version of my font using a custom parameter for the instance. Works as expected when I export an OTF. However, when I select the instance for the preview then it does not show the rounded corners.

I wouldn’t go as far as to call it a bug but hey, wouldn’t it be super cool to have an instant rounded preview as you edit the source shape?

I guess with custom parameter preview working, there could be other interesting things one could do with it.


Yay! Thanks.

The roughen filter is quite funny as it changes the shape all the time just like the old Beowulf fonts.

I also notice that Font > Generate Instances does not appear to run filter custom parameters.