Problem with toolbar when catchAll is set

[RomeroMsk]

When yii\web\Application::$catchAll is set, debug toolbar will be rendered as "maintenance" page, so you will see content of that page rendered twice.
I suggest to disable debug toolbar when this application property is set.

[steve-obrien]

Yes having this issue too. CatchAll is useful for application installation screens.
Perhaps adding a simple return if we are in a catchAll state to the Debug Module's bootstrap function.
This feels like something the debug module should be aware of as it will not work in a catchAll state, and it took a while to figure out why I had two pages showing.

if (Yii::$app->catchAll !== false) {
    return;
}

[SilverFire]

Resoled by documentation notice