Entry / command line bug

[retoa]

I have the same problem, but I never ran python programs nor any other.
I can not insert an equation in CAS:

a=2 will be taken as a:=2

x=2*x^2+3 as x:=2*x^2+3 so the Prime tries to assign 2*x^2+3 to x itself and i get an error, recursive definition, which is true with :=

Same problem on 2 different Prime end one windows virtual calculator.
I tried with index:=1 but it did not bring any difference.

Here the display, note that I did not write the ' ' around index