The scrollbar for Subtask options is gone

Issue Summary

In Jira 7.12, the options menu for subtasks had a scrollbar. This was helpful since not all of the options could always be fitted in the displayed menu.
However, after several version and update fixes, the scrollbar for subtask menus disappeared.

Steps to Reproduce

1. Create an issue
2. Create a subtask
3. Click the triple dot menu for the created subtask
   

Expected Results

The menu would have a scroll bar, especially when there are too many items to be displayed, or if the webpage is zoomed in and it can't fit all of the contents of the menu in the screen.

Actual Results

The options in the subtask menu are clipped, and are not visible.

Workaround

Add the CSS below in the announcement banner as described in KB on adding a scrollbar for subtask option menus

<style type="text/css">
div[id^="actions_"][id$="_drop"]{
    overflow: scroll;
    height: 600px;
}
</style>

This will add a scroll to any actions_<id>_drop elements in Jira when the number of elements exceed 600 pixels, which includes subtask options.