When active pulls other custom post types into main posts page?

Hello,

I’m just using your plugin on a site for an IDS client (they have given me your plugin to use). On the site I also use this plugin to populate content blocks around the site:
http://wordpress.org/support/plugin/custom-post-widget

When I activate the IDS plugin, suddenly all the content blocks plugin posts get displayed as regular posts on my normal posts page. Any idea why this might be?

The developer of that plugin said he thinks the IDS plugin is modifying the loop which causes the content_block post types to appear on my posts/homepage.

Please can you advise?

Thanks!

https://wordpress.org/plugins/ids-ks-international-development-research-plugin/