Question: Is there something wrong with [my copy of] Maple, or is it me?

I used Maple a few times, years ago.

I've just installed Maple (2017.3).

Here is my first,  very confusing dialogue.

3
 =                              3

3(1+x)
 =                           3 + 3 x

factor(x^2-1)
 =                       (x - 1) (1 + x)

(x-1)(1+x)
 =                         x(1 + x) - 1

Oops

Mathematically that it just wrong (unless x = 0)   

It uses implicit multiplication on output.  

And accepts it on input.

And then prints(what appears to be) garbage.

I struggle to find any interpretation of (x-1)(1+x) => x(1 + x) - 1 that makes sense

On the other hand I don't feel quite arrogant enough to file a fundamental bug report in Maple after 5 minutes use.

Can anyone tell me what is going on here?  Or is it just early onset dementia?