Question: Bug in integral simplification?

I encountered a bug in a combination of simplify and Int. A minimal example is given by the following commands (code attached in file bug.mw):

restart:
# simplification bug: first result pulls r out from under the dr integration
integrand := r;
simplify(Int(integrand, phi = 0 .. 2*Pi, r = 0 .. 2));
simplify(Int(integrand, r = 0 .. 2, phi = 0 .. 2*Pi));
simplify(Int(integrand, r = 0 .. 2));
simplify(Int(integrand, phi = 0 .. 2*Pi));

give a wrong result at the first simplify, whereas the others work correctly. It seems that simplify only checks the first integration variable when deciding whether to pull out the factor r from the integral.

As Maplesoft does not advertise a dedicated bug report email/site I post it here. If there is one, where can one find it?

Cordially,

  htc