Is it bug? CAS solve function.

[compsystems]

but in the hpprime it only allows up to 12 digits on home view
HDigits := 13 returns "HDigits(13) Error: Bad Argument Value"

on cas view

Digits := 1000; approx(π); returns 3.14159265359 Bug?
Digits := 13; solve(x^3-1.1*x^2-65.4*x+229.5=0,x) returns {-9.,5.00000000001,5.09999999999}


/!\ Digits command does not appear in the catalog