We are using Moodle v2.8 with Essential theme v188.8.131.52 (Build: 2015040900).
When using Chrome (v43.0.2357.134 m) to move an activity or resource the entire screen turns blue, so we see the following:
I have tested moving activities and resources with the Clean theme and this does not occur.
This is also happening when using drag and drop quiz questions, so it is quite a large issue for us.
Does anyone know what is causing this and what I can do to fix it?