Hi,
this is a known issue in 2.10.04, and there is unfortunately no workaround, except ignoring stored settings for the given window.
This is fixed in our development version.
We should provide a Maintenance Release of GDC, but we still have open issues we would like to see fixed before releasing the version ; therefore we can't announce a release date today.
If this is a blocking issue for you, I would recommend you to contact your support center directly.
Regards and sorry for the incovenience,
Pierre-Nicolas