When you select a field from Compass' dropdown without typing the whole field name, an index is generated on only the characters typed in the text box.
- Create and index and start typing in the field name text box
- Select a field from the suggested field dropdown
- Create and index
You'd expect an index to be created on the field selected from the dropdown.
An index is created on the text entered in the text box before the field is created.
See screenshots for an example flow where I select "access" from the dropdown.