Hello Dean,
What you are seeing here is the Translation file and not the translated string. Odd that this would be browser specific.
If you look at the DEV tools in the browser are you seeing any calls that are failing
For Safe mode, is this the same as a "Private" browser session? This is a good test that removes plugins and cacheing issues.
Thank you
Tony Scholz
System/Network Administrator
SmarterTools Inc.
www.smartertools.com