[Dropdown] Clearable dropdown initialized with a select always show the remove icon

[prudho]

Bug Report

Expected result

A none selected dropdown without any remove icon.

Actual result

A none selected dropdown with a remove icon, which is not correct.

Testcase

https://jsfiddle.net/zw349kst/

Screenshot

Version

2.6.4

Primary analysis

The css selector for hiding the remove icon is not valid when the dropdown is initialized from a select. Start investigating here: /src/definitions/modules/dropdown.less#L650.