I think the codecov extension may be unnecessarily changing the GH discussion page, First image is what I see when the extension is enabled and the second is the proper rendering when I removed the extension
Looks like a CSS conflict with the styling library (basscss) we have injected for use in the extension. I'll try to make it so that basscss classnames have a custom prefix (e.g. codecov-extension-col-8) or move to a different library that allows this.