Problem: When pressing TAB in the minibuffer to get completions, the cursor is moved to the window of whatever file I am editing.
Expected result: Pressing TAB in the minibuffer should keep the cursor in the minibuffer (or move it to the Completions window).
Actual result: Pressing TAB in the minibuffer moves the cursor to the window of the file I'm editing, requiring me to move it back to the minibuffer to continue working. This only happens when a Completions window is opened.
How can I keep the cursor in the minibuffer after tab completion?