Mixpanel Dashboard Images in Slack Are Cut Off When Using Subscribe Tool—Seeking Workarounds

I've been using the subscribe tool to push mixpanel dashboards into Slack as there's people who are interested in the reports that don't (and won't) have access to mixpanel directly as there's no "view only" role for the reports. What I've found though is that the images that get sent into Slack don't contain the full report image, they're being cut off, which means a bunch of the information is missing. So, I've had to save each chart as an image, then paste that into slack instead to get all the detail. Is this a known issue, or is there a clever workaround I just haven't found yet?