Event is not dispatched when collecting totals on ajax request

[rklerck]

We've created an observer on the event 'sales_quote_address_collect_totals_after', and it works when the page is visited the first time. But when the spinner shows (ajax?) on the shopping cart, the event is dispatched again. But now the observer never 'catches' the event?!

[Vinai]

This issue probably has to do with the are processing the request. The github issue tracker is intended for technical issues only.
Please refer to the forums or magento stack exchange for technical questions. In your case probably the [programming questions forum](https://community.magento.com/t5/Programming-Questions/bd-p/programming-magento-2 would) would be the most appropriate.
Please feel free to reopen this issue if you think you have encountered a bug in Magento 2.

[rklerck]

Not sure why this is closed?
It looks like a bug in Magento. My observer works, but not when the ajax request is done in the shopping cart collecting totals.

[Vinai]

As I've said, please reopen the issue if you believe it is a bug indeed.
But first, have you checked in which area the ajax request is processed? Is it in the frontend or webapi_rest? In what areas events.xml have you declared the observer? If you need more information about this please refer to the resources listed above.

[rklerck]

And how can I reopen the issue?
I declared it in frontend and admin (just to be sure). It's weird that it works when the shoppingcart is opened, but not on the ajax call.. should be the same area in my opinion.

[Vinai]

There should be a button "Reopen" below this thread. Just click that.
Different from M1, in M2 API requests have their own areas, see app/code/Magento/Reports/etc/webapi_rest/events.xml for example.

[rklerck]

I only knew about the frontend and adminhtml, copying the events.xml to webapi_rest folder did the trick, thanks.