Keyword search no longer work

[SimonBasca]

Build: 17.0 (15036)
Device: iPhone 7
iOS: 12.2

Preconditions:

• From Desktop, setup a few keywords search by right clicking on a search field and "Add keyword for this search".

Steps to reproduce:

1. Tap on the URL bar and type one of the keywords added from the preconditions followed by a search term and type "Go".

Actual results:

• Tapping "Go" will result in search on the default search engine.

Expected results:

• Firefox should return all results for the search term, conducted trough the search engine saved by the keyword.

Notes:

• Last good build 17.0 (14949)
• First bad build 17.0 (15013)

[kewisch]

Duplicate of #4779 ?

[SimonBasca]

Duplicate of #4779