Studio Source Safe Integration
Studio Source Safe Integration has really gone downhill since VS 6. I just lost significant work when trying to pull up a file that was intentionally not yet checked in (or even checked out) - the message I got was "Your action caused a file to be checked out of source safe" and all my work was gone, no prompt, nothing.
I understand how software developers can write bad software for bankers and doctors because they don't understand the first thing about being a banker or a doctor. I don't understand how developers can write software for software developers that is this bad - if they didn't understand the first thing about software development, they shouldn't have been able to create a product at all.