Tkinter.ttk.Treeview column #0 continuously expands on Style() object kwargs configuration #159078

import tkinter as tk
from tkinter import ttk

def center_window(window: tk.Tk | tk.Toplevel, width: int, height: int) -> None:
    window.update_idletasks()
    x = (window.winfo_screenwidth() // 2) - (width // 2)
    y = (window.winfo_screenheight() // 2) - (height // 2)
    window.geometry(f"{width}x{height}+{x}+{y}")

def configure_styles() -> None:
    style = ttk.Style()
    # configuration with kwargs causes a forced redraw of the entire application
    # which ends up recalculating the width of the treeview in root on
    # subsequent calls.
    style.configure("Treeview", rowheight=40, font=("Segoe UI Semibold", 18))

def create_root_window() -> tk.Tk:
    root = tk.Tk()
    root.title("Treeview Bug Example")
    center_window(root, 800, 800)

    base_frame = ttk.Frame(root)
    base_frame.grid(row=0, column=0, sticky="nsew")
    base_frame.rowconfigure(0, weight=1)
    base_frame.columnconfigure(0, weight=1)
    base_frame.columnconfigure(1, weight=1)

    f1 = ttk.Frame(base_frame)
    f1.grid(row=0, column=0, sticky="nsew")
    f1.rowconfigure(0, weight=1)
    f1.columnconfigure(0, weight=1)

    tree = ttk.Treeview(f1, show="tree", selectmode="browse")
    # tree.column("#0", width=300, stretch=False)
    tree.grid(row=0, column=0, sticky="nsew")
    scrollbar = ttk.Scrollbar(f1, orient="vertical", command=tree.yview)
    scrollbar.grid(row=0, column=1, sticky="ns")
    tree.configure(yscrollcommand=scrollbar.set)
    tree.insert("", "end", text="Item 1")
    tree.insert("", "end", text="A longer string for Item 2")
    tree.insert("", "end", text="Another item")

    f2 = ttk.Frame(base_frame)
    f2.grid(row=0, column=1, sticky="nsew")

    run_btn = ttk.Button(f2, text="Run", command=configure_styles)
    run_btn.grid(row=0, column=0, sticky="nsew")
    exit_btn = ttk.Button(f2, text="Exit", command=root.destroy)
    exit_btn.grid(row=1, column=0, sticky="nsew")
    
    configure_styles()

    root.rowconfigure(0, weight=1)
    root.columnconfigure(0, weight=1)

    root.bind("<Escape>", lambda event: root.destroy())

    return root

def main() -> None:
    root = create_root_window()
    root.mainloop()

if __name__ == "__main__":
    main()

    # tree.column("#0", width=300, stretch=False)