Dev Build 2066
changed the way selections are drawn, showing the syntax highlighting through the selection (for colour schemes other than Monokai Bright). It also changed the default colour scheme from Monokai Bright to Monokai.
Before the next regular build goes out, I'd like to confirm that changing the default colour scheme from Monokai Bright to Monokai is the right thing to do. Monokai Bright gives the selections more contrast with the background colour, but obscures the syntax highlighting - it's otherwise identical to Monokai.
You can see what colour scheme you're currently using from the Preferences/Color Scheme menu.