Initializing a type of tasks select list in the lightbox

I am having trouble getting the select list to show the dropdown list of task types. The dropdown does not show up at all.

I have this piece of code

gantt.config.lightbox.sections = [ { name: "description", height: 38, map_to: "text", type: "textarea", focus: true }, { name: "type", type: "typeselect", map_to: "type" }, { name: "time", height: 72, type: "duration", map_to: "auto" } ];

only the Description and Time display. The Type with all of the task types don’t show up.

Just to note I am using the trial version,

Here is all of my code.

gantt.config.lightbox.sections = [ { name: "title", height: 20, map_to: "text", type: "textarea", focus: true }, { name: "type", type: "typeselect", map_to: "type" }, { name: "details", height: 70, map_to: "details", type: "textarea" }, { name: "time", height: 72, type: "time", map_to: "auto" } ]; gantt.config.lightbox.project_sections = [ { name: "title", height: 20, map_to: "text", type: "textarea", focus: true }, { name: "type", type: "typeselect", map_to: "type" }, { name: "details", height: 70, map_to: "details", type: "textarea" }, { name: "time", height: 72, type: "time", map_to: "auto" } ]; gantt.config.lightbox.milestone_sections = [ { name: "title", height: 20, map_to: "text", type: "textarea", focus: true }, { name: "type", type: "typeselect", map_to: "type" }, { name: "details", height: 70, map_to: "details", type: "textarea" }, { name: "time", height: 72, type: "time", map_to: "auto" } ];

Hello,

Your code works properly:
docs.dhtmlx.com/gantt/snippet/d4f83aa7

Please, provide with the demo where we can reproduce the issue.