Issue Summary

Jira 9.2 introduced Performance improvement to the dropdown menus in the app.
Instead of initially loading all the available items for a particular picker, it now only displays 100 items on the list.
When the picker is the field version, at the end of the dropdown list, we can observe a warning message like "7 more options. Continue typing to refine further".
However, when the field is a Custom field 'Select list (Single Choice)' or 'Select list (Multiple choices)', the list is truncated without any warning.

This is reproducible on Data Center: (yes) / (no)

Steps to Reproduce

1. Create a custom field "Sel1" using 'Select list (Multiple choices)' (could be also Single choice);
2. Add the new field to your projects and screens;
3. Add more than 100 options to the list;
4. Navigate to the Issue Search and use the Basic View;
5. Expand the "more" menu and Select the field "Sel1";
6. Scroll down the "Sel1" up to the bottom;

Expected Results

Warning that the list was not complete

Actual Results

The list is not complete, no warning advising that it was truncated

Workaround

• It is not possible to disable the new Picker;
• User needs to type to refine the search or use the Advanced Search, manually typing the option.