How do you ensure loading unsafe scripts is allowed in IE11 and Microsoft Edge.
I can do this in Google Chrome but not in the Microsoft browsers mentioned above.
I get this error when loading the new SharePoint Workbench (workbench.aspx)
To ensure loading unsafe scripts For IE 11
Check also the detail steps How to enable display mixed content to avoid “Only Secure Content is displayed” risk within Internet Explorer and “This page is trying to load scripts from unauthenticated sources” risk within Goggle Chrome
Regarding Microsoft Edge :
Microsoft response Please be informed that Microsoft Edge has not yet introduced the feature for enabling and disabling the setting for Display Mixed Content.
So, in this case, you should switch to Google Chrome or IE 11.