Tooltip: Error when opening tooltip using isOpen property

[Agamnentzar]

Opening tooltip using [isOpen] property is causing following error

Error: ExpressionChangedAfterItHasBeenCheckedError: Expression has changed after it was checked. Previous value: 'undefined'. Current value: 'tooltip in tooltip-top top undefined'. It seems like the view has been created after its parent and its children have been dirty checked. Has it been created in a change detection hook ?

Also "undefined" class is being added to tooltip if containerClass is not specified

[jcairney]

@IlyaSurmay Question about this: Is isOpen meant to be used to open the tooltip as described above? The block comment for the property suggests it is read only, which defies convention for @input properties in Angular. I haven't been able to confirm it is ReadOnly by looking at the minified source.