So B is a problem creating personality and A runs to the boss at every new instance...
Guess who the boss thinks is the problem....
B isn't bothering the boss at all, because the boss doesn't have to actually work with B,
But A is continually whining to him.
Now if the manager actually went to B and tried to do something, and B didn't respond, then B would be the manager's problem. Along with A.
But I'd have to guess the boss just makes sympathetic noises and suggests to A that A should make allowances and try to ignore it.
Chances are there is nothing for the manager to latch onto to that would give him a safe course of action/solution so this is just an ongoing problem.
Probability:
HR got laid off as part of downsizing and I'd guess it didn't get any better yet (HR not replaced). So the chances are there may be some more "rationalisation - downsizing - restructuring" to come, planned or not (if it isn't getting better, its probably getting worse).
I'd guess A will feature higher in the hit list than B.
This is management's usual way of
solving problems.
That and hoping for natural wastage to solve the problem for them.
JMW