For the mutable plugin there is some odd behavoiur when updating the character via widget blueprints. I also believe that this issue effects the last added parameter, as in you have 10 parameters and only the first 9 will work. This is the quickest way to reproduce the issue.
- Create a Customizable Object with only 1 parameter (Jackets).
- Setup a widget to update the parameter (Jackets) with a button click.
- Enter PIE and attempt to update via the widget. Notice that it returns blank.
- Go back to the Customizable Object and create a dummy/blank parameter.
- Compile, save and enter PIE and a attempt to edit again via the widget button.
- Observe that the Jackets parameter updates correctly.
You can create the Blank parameter in an External Object too, either way this somehow fixes the issue.
