MatAutocompleteTrigger optionSelections Observable stops working

[l10rdev]

What is the expected behavior?

The AutocompleteTrigger.optionSelections Observable emits the value of the selected Element (and the counter increases).

What is the current behavior?

The AutocompleteTrigger.optionSelections Observable does not emit a new value.

What are the steps to reproduce?

https://stackblitz.com/edit/autocomplete-force-selection-4cyhez?file=app%2Fapp.component.ts

1. Type 'Material' in the autocomplete field
2. Delete it.
3. Type 'Ma'
4. Select 'Mary'

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

• Angular Material: 7.21, 5,2,5 .

Is there anything else we should know?

This is also true for other AutocompleteTrigger Observables like panelClosingActions.

[mmalerba]

I don't think it's a bug with autocomplete, you just need to add markForCheck() after to trigger change detection to update the counter element: https://stackblitz.com/edit/autocomplete-force-selection-pv5wgb?file=app/app.component.ts

[l10rdev]

That does not solve the issue. Follow the steps I provided. If you type in 'Google' so there are no suggestions for autocomplete then delete everything again an chose an available option the counter does not increase.

[mmalerba]

Ah I see, yes I am able to reproduce it. I will re-open this issue

[turulb]

I've run into this problem with panelClosingActions, after upgrading angular/material to v9.
Will it be also fixed? If so when will it be released?

[DEG-7]

any news about it? thanks and regards

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