Anything that size is probably designed to go through garden gates and doorways for small DIY projects rather than hogging out ground on hillsides and farmland. I'm not surprised it's unstable - small and compact usually does not equate to such.
It's zero tail and fixed tracks though so double bad.
The non expanding track machines had a large tail swing to hold them down. The modern zero swing machines of large brands have expanding tracks to help keep them stable.