Bootstrap 4 alpha 6 not working with typeahead

Question

The problem occurs when using input-group css class. The text box appears as if it were cut.

Typeahead works but the design is displayed erroneously:

The idea is not to apply more css format to the control. Use the one that comes by default.

Answer 1

I have solved the problem by adding 100% style to the width of the control while solving the problem natively, because it is not the idea to add more css code. Thank you.

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