CCDM: history actions do not work as in v14

[manolo]

Enable client-side mode in flow-tests/test-root-context and run either HistoryIT BackButtonServerRoundTripIT, they will fail

mvn verify -Dvaadin.useDeprecatedV14Bootstrapping=false -Dit.test=HistoryIT,BackButtonServerRoundTripIT

[ajgassner]

Currently we are unable to use Vaadin 15 in our project. Everything works fine except the history API and router links. We aren't using client side views yet.

E.g. UI.getCurrent().page.history.back() or RouterLink("test", SomeView::class.java) are unreliable, they change the URL but no content changes on the page sometimes. Same behavior tested directly in the browser's console with history.back().

@haijian-vaadin I suggest to to raise the severity of this issue, it's a real problem. I think it's somehow caused by vaadin-router on the client side.

[haijian-vaadin]

Hi @ajgassner thanks a lot for the feedback. It indeed sounds more severe than we originally estimated. Do you have a project that we can use to reproduce the problem?

[ajgassner]

Mhm i just tried to reproduce the issue with a small sample application. With this minimal example it works as expected. I really don't know what's causing the problem in our larger production application unfortunately. There's also nothing special or custom.

[haijian-vaadin]

Hi @ajgassner, do you happen to use ui.navigate()? wonder if #8071 is related or not.

[ajgassner]

Hi @haijian-vaadin!

Yes that‘s the case. E.g. ui.page.history.back() is also affected.
Here is a reproduction demo: demo.zip

[haijian-vaadin]

Thanks for the demo @ajgassner, wow, you are using Kotlin, cool!

[haijian-vaadin]

@ajgassner this issue should now be fixed in the @vaadin/router 1.7.2.
You can try to delete the node_modules folder and the package-lock.json in your project, then it should be able to get @vaadin/router 1.7.2. You can give it a try and let us know if it works for you.

[haijian-vaadin]

HistoryIT is still failing, but keep this ticket closed and open vaadin/hilla#316 for tracking this particular issue.