Copying text in readonly lightbox

Hello,

I am using the scheduler with scheduler.config.readonly_form = true.
In the lightbox I cannot select or copy the text (Ctrl+C does not work).
Is this the expected behavior?

The same happens if I set readonly only for a specific event.
Why does this happen?

Thank you.

Best regards,
Jonas



<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <script src="<?php echo JS_PATH;?><?php echo 'dhtmlxScheduler_v7.2.3';?>/dhtmlxscheduler.js" type="text/javascript"></script>
        <link rel="stylesheet" href="<?php echo JS_PATH;?><?php echo 'dhtmlxScheduler_v7.2.3';?>/dhtmlxscheduler.css" type="text/css">
    </head>

    <body>
        <div id="scheduler_here" class="dhx_cal_container" style='width:100%; height:100%;'></div>

        <script>
            scheduler.plugins({
                readonly: true
            });

            scheduler.config.lightbox.sections = [
                { name: "description", height: 130, map_to: "text",      type: "textarea" },
                { name: "ben",         height: 130, map_to: "ben",       type: "textarea" },
                { name: "time",        height: 72,  map_to: "end_date",  type: "time" }
            ];

            scheduler.config.readonly_form = true;

            scheduler.init('scheduler_here', new Date(), "week");

            scheduler.parse([
                { id: 1, start_date: "2025-10-03 08:00", end_date: "2025-10-03 09:30", text: "Mathe",    ben: "JOnas" },
                { id: 2, start_date: "2025-10-03 10:00", end_date: "2025-10-03 11:30", text: "Englisch", ben: "JOnas" },
                { id: 3, start_date: "2025-10-03 13:00", end_date: "2025-10-03 14:30", text: "Sport",    ben: "JOnas" }
            ], "json");
        </script>
    </body>
</html>