pylint #36586 Incorrect errors and warnings produced when using multiple inheritance [open]

If a class uses multiple inheritance, pylint 0.21 does not pick up any but the first base class, if the bases classes are in a different module. 
For example:

import testmodule

class C(testmodule.A, testmodule.B):
    def __init__(self):
        self.cvar = "C"

if __name__ == "__main__":
    c = C()
    print c.avar, c.bvar, c.cvar

class A:
    def __init__(self):
        self.avar = "A"

class B:
    def __init__(self):
        self.bvar = "B"

gewoia : pylint
************* Module test
W0233:  7:C.__init__: __init__ method from a non direct base class 'B' is called
E1101: 12: Instance of 'C' has no 'bvar' member

I have various other errors and warnings as a result of this situation also.

The problem disappears if you move classes "A" and "B" into the same file. It is not present in version 0.19, don't know about 0.20.
done in<not specified>
closed by<not specified>