Autocomplete does not work using Firefox Mobile browser

[jacorre]

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[ X] bug report => Search github for a similar issue or PR before submitting
[ ] feature request => Please check if request is not on the roadmap already https://github.com/primefaces/primeng/wiki/Roadmap
[ ] support request => Please do not submit support request here, instead see http://forum.primefaces.org/viewforum.php?f=35

Plunkr Case (Bug Reports)
https://github-qpyv5t.stackblitz.io

Current behavior
When using the Firefox browser on a mobile device (in this case Android), no autocomplete values appear while typing.

Expected behavior
I would expect the matched values to appear while typing.

Minimal reproduction of the problem with instructions
Visit https://github-qpyv5t.stackblitz.io on your mobile device using the Firefox browser. Begin typing in the autocomplete field and notice no matches appear. Entries available in example are: one, two, three, four, five.

You can also reproduce this issue using the example on the PrimeNG website.

• Angular version:
  7.2.10

• PrimeNG version:
  7.1.3

• Browser:
  Firefox Mobile Browser v68.0.2

• Node (for AoT issues):
  8.14.10

[JacobSiegle]

Testing it a bit the autocomplete does work if you click on it and type, click off, then click on it again and type. The first click on load doesn't show the auto complete box.

[jacorre]

I tried clicking in the field, outside of it, then in the field again and typing, but still don't see anything happening?

I haven't had any success using the example on the PrimeNG website either.

[JacobSiegle]

Sorry I updated my comment you have to type on the first click also. Either way it's still bugged, just thought the note might help the maintainer.

[jacorre]

Yeah possible workaround for now, or might help in understanding the issue. Thanks!