Shortcodes not working in Widget

Looking for help with the making shortcodes not appear in the widget.

When I add a shortcode (from other plugins) into the top of a post, they appear in the sidebar widget of this recent post widget. Have a look at sidebar on our transcription blog and you’ll see the shorcodes appear in [].
How do I make the shortcodes work on this widget?

Thanks.

https://ww.wp.xz.cn/plugins/bdwebteam-recent-post-tabs-widget/