How to select auto-completed fields/values with keyboard's key (not using mouse)?

Question

I have to use mouse to select auto-completed words, I have tried down arrow but it doesn't work.

Is there any key to select this as in SQL editor.

Star Wars · Answer

Pressing "Down arrow" key is not working.

unknown · Answer

You are typing in your keyboard in the JQL query bar, a suggested word came up, you press the "Down" arrow key then it's not working?