In some cases high resolution (also known as HiDPI) displays may not display as intended. This problem is exacerbated on physically smaller Hi resolution displays normally found on tablets and laptops.
TaxCalc are working to address this with the forthcoming implementation of a new toolset that will allow us to work with HiDPI displays seamlessly. Until this time the following process should resolve most of the issues associated with HiDPI displays and TaxCalc.
Selecting this new shortcut should now display the TaxCalc program in a more HiDPI friendly manner.