The Stack Exchange logo displayed in the top left is written as Stack Excharge. Why? Is it done purposefully or a bug?
I expect this bug will not be looked into further, as the logo displays correctly on all supported browsers, and you've indicated you're using an unsupported browser.
Please see Which browsers are officially supported, and what else do I need? for information on which browsers are supported on these sites, and consider switching to a supported browser if you are finding issues that prevent normal site usage.
If you find this bug in a supported browser please create a new question and provide the browser version and screenshots demonstrating the bug.