FocusScope : first click event not propagated

[djobet]

Hello, I added a FocusScope on my TreeView.
Now I need to click once so the TreeView gets the focus and a second time so the click is actually propagated to open a branch of the treeview.
Before I added the FocusScope, I could click once to start opening branches.
To me, it looks like the first click is "lost".

Is there a way around that ?

export component App inherits Window {
    HorizontalLayout {
        VerticalLayout {
            Rectangle {
                vertical-stretch: 1;
            }

            ChessBoard {
                vertical-stretch: 0;
                height: self.width;
            }

            Rectangle {
                vertical-stretch: 1;
            }
        }

        MoveTree {
            // FocusScope {
            //     key-pressed(event) => {
            //         parent.on_key_pressed(event);
            //         accept
            //     }
            // }
        }
}

with MoveTree defined as

export component MoveTree inherits Rectangle {
 ...
 ListView {
     for chess_move in MoveTreeModel.chess_moves: HorizontalLayout {
            width: parent.preferred-width;
            spacing: 5px;
            Rectangle { width: chess_move.indentation * 20px; }
            Text {
                text: !chess_move.has_children ? "" : chess_move.open ? "⊟" : "⊞";
                horizontal-alignment: right;
                vertical-alignment: center;
                width: 20px;
                TouchArea {
                    clicked => { chess_move.open = !chess_move.open; }
                }
            }
            for move in chess_move.moves : Rectangle {
                HorizontalLayout {
                    Text {
                        text: move-desc(move, move==chess-move.moves[0]);
                    }
                    for nag in move.nags : Text {
                        text: MoveTreeModel.nag-str(nag);
                    }
                    Text {
                        text: " " + move.comment;
                    }
                }
                ta := TouchArea {
                    clicked => {MoveTreeModel.left-click(move.path);}
                }
                background: ta.has-hover ? #f5d4d4 : root.background;
            }
     }
 }

[djobet]

Actually, I found a way to fix it shortly after posting the question.
It currently works because I only have one widget which receives keyboard events.
But what if I had multiple widgets receiving keyboard events ? (should be the case soon)

export component App inherits Window {
    HorizontalLayout {
        VerticalLayout {
            Rectangle {
                vertical-stretch: 1;
            }

            ChessBoard {
                vertical-stretch: 0;
                height: self.width;
            }

            Rectangle {
                vertical-stretch: 1;
            }
        }

        mt := MoveTree {
        }
    }

    fs := FocusScope {
        key-pressed(event) => {
            mt.on_key_pressed(event);
            accept
        }
    }

    init => {
        fs.focus();
    }
}