Single object configurator - Apply Selections -> Add data search becomes unresponsive for large fields

To replicate the problem:

• Get an app containing a field having around 1 000 000 values and select it in the Single configurator
• Select any objects in "Sheet and Objects"
• Click on "Add data" on "apply selections"
• Choose the field with many data
• Search for a value

You see that the application becomes unresponsive. The search field takes long time to show the results and when they appear, it is not possible to select them. CPU usage goes up to 100%.

This happens for that field, that contains many values. Other fields in the list are working correctly.

Sometimes, the Search functionality becomes unresponsive before you can search on anything, so you can see all the values, but you cannot filter them.

Environment

•  Qlik Sense 2018 all version
•  Qlik Sense 2019 February release