Gitpod: hitting a breakpoints freezes the entire IDE.

[Alaboudi1]

Why hitting a debugger; statement in js code from the preview window also freezes the IDE? Is this the expected behavior?

[svenefftinge]

Yes, websites with iframes run in a single loop. You need to open the preview in a new browser tab to get around that.

[svenefftinge]

Sorry, I don't think we can do anything about it as it is how browsers work.

[svenefftinge]

To open the preview in a browser tab click the icon on the top right.

[svenefftinge]

@akosyakov could you verify?

[akosyakov]

All windows on the same origin share an event loop as they can synchronously communicate

From http://hassansin.github.io/shared-event-loop-among-same-origin-windows

Because of it, I'm not sure that opening another window will help. It should still use the same event loop if it comes from the same origin.

I think ideally we should run all theia iframes sandboxed somehow, i.e. on different origins, that they don't share event loop and other common state as cookies and local storage.

[AlexTugarev]

@akosyakov see last paragraph:

It turns out we can pass an option noopener in window.open()

[akosyakov]

@AlexTugarev but then we won't be able to communicate with that window? i.e. right now there is no way to detect iframe focus except installing a listener inside iframe and forward them to host window. I hope we will fix it in this way that focus given properly.

[svenefftinge]

So sounds like adding rel=noopener is still missing for our open in browser command?

[akosyakov]

An issue in upstream: https://github.com/theia-ide/theia/issues/5857

[Alaboudi1]

I believe this has been fixed 👍.

[jankeromnes]

@Alaboudi1 indeed thanks, good catch! 💯

The fix was merged 21 days ago and deployed as a hotfix 16 days ago. 🎉

[DanTup]

I'm hitting this issue today, it doesn't seem fixed?

[svenefftinge]

It was reintroduced lately by some changes we made in Theia. Thanks for the PR you provided, we will put it into production ASAP.

[svenefftinge]

In production now