I have a simple SharePoint Web Application which have no issue or bug, until a client open it in Safari browser version 7.1 on Mac OS 10.9 Mavericks a month ago.
Since I don't have any Mac OS, then I tried to open the web via browser emulator in http://www.browserstack.com/ and found that the problem is only happen in Safari 7.1 and 8 (no matter what the device, MacOS, iPad, or iPhone6)
When we open it using Google Chrome, Firefox, IE any version, even Safari 6 or older, it looks okay.
But when we open it using Safari 7.1 or later, the menu bar looks like wrecked.
Is anyone know how to fix it?
I've did deep research and found the main problem. It's not about the layout code, but the problem is compatibility between my old SharePoint 2007/2010 with the new Safari browser 7.1 or later.
The problem fixed by this thread: ASPMenu in Safari 7.1 Not Rendering Properly in SharePoint 2010