Authors of this textbook that I'm holding should replace their GPU because that graphical glitches are bad

Can you translate it a bit ?

@wowotek well the description for this picture is: table with advanced structure. The book here is CS, 8th grade and we're learning macroshaft word 2007 (we're using micronblow word 2016 in school) and it also explains how to do tables in LibreOffice.