I have customised one of the internal pages of my site in Wordpress YOAST SEO plugin for a specific title. When I look in Google the results shows only the first part of my title followed by "- behance". I have no idea what this is. Any help?
The title can be different from the one put in title tag at times, based on how google generates the titles of its results, as explained here: https://yoast.com/google-page-title/
Checked your site specific results : https://www.google.co.in/#q=inurl:http://runnerbeantours.com/
behance does appear in few of the results.
But for your page, this is not the case,as the google cache (april 9 )of those pages does not have "behance" in the title or anywhere in the page.
The possibility is that it might have been in the title of your pages sometime back, perhaps due to any
behance brand wordpress theme or plugin being used then.