Project files incorrectly marked as modified

If I open a project checked out from git from a network drive on a Linux machine using RubyMine on my Windows machine, all files in the project view are marked as modified. Comparing a file using the git "Compare with ..." operations reports that the contents are identical, so I am sure the problem is the difference in line endings between the two systems. I'm pretty sure I don't have the same problem when using SVN.

I've tried setting ignorecase = true in my git config, but it doesn't seem to have any effect.

Is there a setting I'm missing or a workaround for fixing this? If this is a known issue, can someone link me to the tracker for it?

Thanks