What causes incorrect display of fonts (all) in Mozilla Firefox?

Question

Browsers

In Mozilla, any fonts are displayed incorrectly (Windows 7):

In abbout: support such information:

But why then in all other browsers (including IE) - everything is in order?

Answer 1

Create an issue in firefox's bug tracker.
Describe the problem in detail there, they will help.
There is no point in waiting for an answer.