Code completion not working

Created by: maschere

Description

Code completion window does not show after pressing ctrl + space. It works fine in Processing 3.5.4

Expected Behavior

Code completion window pops up after pressing ctrl + space

Steps to Reproduce

1. open blank project
2. enable "code completion with ctrl+space" in preferences
3. type int testvar = 1;
4. type testv in the next line and then press ctrl+space

Your Environment

• Processing version: 4.0a3
• Operating System and OS version: Windows 10 x64