@dan @ben When using the Summary colors in the accordion, if you DO NOT have any padding set, where the colors can extend to the edges. Any border radii that you have applied will not be visible on the collapsed accordion. When you expand it if there are radii on the bottom corners those will be displayed. But none will be visible when collapsed.
This is only a problem if the summary colors are implemented. With no colors, the radii work as expected.
I’ll take a look at this one ASAP 
Much appreciated.
@ben Did a fix for this make it into the latest build 0.9.10?
Based on my testing it appears to not be fixed.
We didn’t manage to get round to this one, unfortunately. You can always check the release notes to see all the component fixes that have been included in each release
Hopefully we’ll have a fix for this one in the next beta or two!
@handshaper I’m trying to replicate this one, but not having any luck. Could you send me a project where this is an issue for you?
@ben I sent Dan a project yesterday “RM Warehouse” that exhibits this problem.
In there you will see an FAQ, which I got from your core pack. The first accordion has a light red background. Make sure the paddings are all set to ZERO. Your settings for these accordions already had the border radii set to a value.
Now if you look at the top accordion with the red summary background you will see there are no radii present in the top left and right corners. If you expand this accordion you will see the bottom radii, but not the top.
If the padding for the accordion is set to something that is wide enough to accommodate the radii they will show up. It helps to add a drop shadow to the top accordion so you can see what is happening.
You should easily be able to replicate this in any project as I just used your FAQ from the core pack.
I think this is working, and it’s just a settings issue. Have a quick watch of the following video and let me know if that makes sense
That was an easy fix, thanks for looking into it, I can confirm it is now working as planned.