The frontend accepts Sanskrit and other Indic Language scripts but not made for English and hence your result; GIGO principle. I tried out the Gayathri Manthra

The frontend accepts Sanskrit and other Indic Language scripts but not made for English and hence your result; GIGO principle. I tried out the Gayathri Manthra (a simple test) using Sanskrit, Tamil and English scripts and as expected, the first two render fine but not the last.