Typeahead "Open on focus" instantly re-opens popup menu after clicking

[tobihagemann]

Bug description:

The gist is that you can't click on entries in the popup menu anymore if you follow the "Open on focus" example of typeahead and work with remote data. It's not directly reproducible on ng-bootstrap's website but I've posted a minimally-working StackBlitz below which is a combination of the "Wikipedia search" and "Open on focus" examples.

The core issue is probably that you can't distinguish between an actual focus by the user and an auto-focus by the breaking change.

Please see the full bug description here: #2792 (comment)

@lucasklaassen was able to confirm the bug as well.

Link to minimally-working StackBlitz that reproduces the issue:

https://stackblitz.com/edit/angular-f1e9jn

Versions of Angular, ng-bootstrap and Bootstrap:

Angular: 7.0.0 or higher

ng-bootstrap: 3.4.0 (but probably 3.3.0/3.3.1 or higher)

Bootstrap: 4.0.0 or higher