At present there are no known bugs, but there are most likely to be severe limitations of the present graphics system. It is unlikely to work on monochrome systems.
The graphics system tries to use the ``Times-Roman'' font family, which is also available for PostScript output. If it does not find the required font an alternative X-11 font will be tried. This will generally work, but will not be the intended size, so text may be much smaller or larger.
FIT2D now works on Windows system, but this is new and there are many differences, so bugs may well be present on these systems.