Primeng: android dropdown and multiselect with filter fails

[CyleClone]

I'm submitting a ... (check one with "x")

[X] bug report => Search github for a similar issue or PR before submitting

Minimal reproduction of the problem with instructions
https://www.primefaces.org/ultima-ng/#/forms

Open the url on an android device and try to select something with both the dropdown and the multiselect.
The multiselect should close as soon as the focus is lost to the filter in the multiselect, dropdown without a filter works.

Please tell us about your environment:
Android 6 up to Android 9, Built-in Chrome Browser

• Angular version: 7.0.0

• PrimeNG version: 7.0.2

• Browser: Mobile Chrome 71.0.3578.99 | Android X.X Web Browser

[KentMercier]

An additional issue experienced is that clicking the multi select dropdown opens the menu for a split second only, then rapidly closes precluding the opportunity to use the filter or select an option.
Thanks

[theojinchiu]

May we know when this will be fixed?

[SSTPIERRE2]

I'm also seeing this, at least on Android, with multiselects the filter input field gets focus so the soft keyboard pops up, pushing the whole dropdown up and then it actually closes, making it unusable 🤔

[BlackfootPL]

I've added a reason and temporary workaround in #7260 if you want...