I’m trying to build an IntelliSense-like code completion system inside a QPlainTextEdit using PySide2. However, I’m facing issues with focus management and hiding the QListWidget when it pops up. The goal is for the popup to appear when the user is typing, allowing them to continue typing into the text editor while the popup is visible, and then hide the popup when needed (e.g., pressing the Escape key or moving the cursor away).