Button onclick not working in latest version, worked fine in 1.12.4

[feardobeardo2]

In previous versions (up to 1.12) I could add a clickable icons to each option.

<select class="selectpicker form-control socratesFontExtraDark" data-container="body" data-dropdown-align-right="false" data-live-search="true" data-none-selected-text="Select Asset from Library" data-size="5" data-width="200px !important" tabindex="-98"> <option value=""></option> <option value="newField" data-content="<div style='display:flex; justify-content:space-between;'><span>Test Input</span> <i class='far fa-trash-alt' onclick='buttonclick(event)'></i>"></option> </select>

In latest version you can no longer add as onclick gets stripped out.

I would be great if this version could be updated to allow for the same functionality as 12