I have a similar experience to Violet, but in a less complicated? example.
Apologies, I am a new User so it could be me.
I am using the Responsive theme and have created one of your custom sidebars and it is not inheriting the parent themes widget style.
I have viewed the source of the page and under:
<div id="widgets" class="grid col-300 fit">
in the Responsive widget pages you have:
<div id="text-5" class="widget-wrapper widget_text>
but using your custom sidebar it comes out like this:
with no sign of any Responsive wrapper styling?
and it just comes out un-styled?
Any suggestions or is the Responsive theme no longer compatible with your plugin. It was at somepoint as there is a Youtube video up there demonstrating it working.
Another small issue that I am working around.
When adding/editing your widgets in the dashboard I lose functionality of the righthand scroll bar and my only workaround is to change the resolution temporarily to 50% to save the changes.
I hope this is an easy one for you to answer.
I am developing locally so you won't be able to see it online.