Yes, I have.
“confused problems with symptoms" refers to a situation when we see the side effect of a problem as the most crucial thing to handle rather than the core of the problem itself.
For example, let's say that you cannot find fit clothings because you're overweight. If your solution to this problem is to write a letter of complain to the company and demanding so they could produce suitable sized clothing for you (rather than losing weight), You're confusing problems with the symtoms.