Invalid rule configuration only gives feedback on console and does not update UI at all

[platinumazure]

Repro steps:

1. Enter the following into the demo:

   /* eslint no-unreachable: ["error"] */
   function foo() {
       return;
       doSomething();
   }

2. Observe no-unreachable error
3. Change configuration to: /* eslint no-unreachable: ["error", { someInvalidConfig: true }] */
4. Remove the return; statement

Expected: Get an error about invalid rule configuration at some point

Actual: Previous error is stuck on the screen

Note: This also applies to lint-free code, and code will appear to remain "lint-free" even if there are actually lint problems.