OnRetain not called

[kdcro101]

When sticky state with dinamic=true param is deactivated (after previously activated) and activated again with different parameter value, OnRetain is not called. If state is not sticky, everything work as predicted - onRetain is called.

ng -v output:

Angular CLI: 1.7.3
Node: 10.0.0
OS: linux x64
Angular: 5.2.10
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cdk: 5.2.4
@angular/cli: 1.7.3
@angular/flex-layout: 5.0.0-beta.14
@angular/material: 5.2.4
@angular-devkit/build-optimizer: 0.3.2
@angular-devkit/core: 0.3.2
@angular-devkit/schematics: 0.3.2
@ngtools/json-schema: 1.2.0
@ngtools/webpack: 1.10.2
@schematics/angular: 0.3.2
@schematics/package-update: 0.3.2
typescript: 2.7.2
webpack-bundle-analyzer: 2.11.1
webpack: 3.11.0

ui-router modules:

@uirouter/angular: "1.0.1",
@uirouter/sticky-states: "^1.5.0",