I build my C++ project with "Generate gcov information", I run it under the "Gcov" profiler from the Linux Tools repository, and I get a nice coverage overview in the "gcov" view. But when I double click a file (one with about 92 % for example) the editor view that pops up has no coverage highlighting.
I observe this on both x86_64/xenial/Mars and i386/hardy/Luna.
What am I doing wrong?