Can Category Selection dropdown support search function?

[finlabhk]

Hi, I would like to add the multiple search function on existing category selection dropdown. The function seems work but the options of sub group cannot be shown completely. Please refer to the link for reference.

https://jsfiddle.net/0ea7mj2z/1/

[lubber-de]

• Multiple search selection does not support submenus nor submenu entries.
• A search dropdown is supposed to be used on large dropdown lists, that's why there is max-height set to such menus by default. You can adjust the height by either adding long or very long to the dropdown or override the max-height setting manually
• A (multiple) search dropdown is supposed to be used in combination with selection only