"shs-choosen" widget hides taxonomy term selection and prevents selecting child terms

Problem/Motivation

When configuring a taxonomy term reference field using the "shs-choosen" widget, the taxonomy term selection UI fails to appear on the content edit form. As a result:

• The main select box is not visible.
• Users cannot select any terms, including child terms.
• The form is effectively broken for term selection.

This does not happen with the "shs" widget (without choosen), which works as expected.
Attaching a screen recording to demonstrate the issue for reference.

Steps to reproduce

• Create a vocabulary with at least one parent term and some child terms.
• Create a content type with a term reference field using this vocabulary.
• In the field widget settings, select Simple hierarchical select - choosen (shs-choosen) as the widget.
• Try to create or edit a content item of that type

.

Expected Result

• A hierarchical select box should appear.
• Users should be able to select parent and child terms.

Actual Result

• No select box is rendered.
• No terms can be selected.

Proposed resolution

Investigate if there’s a conflict or missing initialization between SHS and the Choosen library. Possibly the select element is being hidden or not properly rendered.