first of all sorry for inconveniences.
The issue is not reproducible for me with latest MS updates (NPM 10.5), so we need to know some more info.
0. Which NPM version do you use?
1. Which OS do you use on your Orion Server?
2. What is the version of the Internet Explorer on your Orion server
3. According to the layout I assume you are using HTML report, not PDF, right?
4. Are you using SSL? (HTTPS connection for your website)
5. Are you using Windows passthrough authentication? (Settings-Web Console Settings-Windows Account Login) - try to disable it temporarilly
Could you, please, create Support ticket? Diagnostics will be needed here.
I have entered a formal support ticket for this. I will post the fix when we have one.