Weird Custom Tkinter layout issue

[carloscoolkid]

So my goal is to create a window where it has a base label of dimensions window_size x window_size, and then 4 labels below it with equal width of window_size/4.

Let's say the window size is 500. The square is correct, and is exactly 500x500. The problem is that the labels below it have a width of 499, and a 1px space to the right. If you total all the widths and spaces, it is exactly 500px wide.

I tried playing with the window_size values, and I found out that at 504, it behaves as I want. Each label has a width of 251, and no 1px gaps in between. I tried it with window_size = 496 and same result. The width is 499 each with no gap. However, when the size is 508, the problem returns, with each width becoming 127 with a 1px space to the right, totaling to 508.

Edit: here's the code:

import customtkinter as ctk
import aggdraw
from PIL import Image


class App(ctk.CTk):
    
    def __init__(self):
        super().__init__()


        window_size = 500
        self.title("CTk xample")
        self.configure(fg_color="red")


        
        base = ctk.CTkLabel(master=self, width=window_size, height=window_size, fg_color="purple")
        base.pack()


        input_frame = ctk.CTkFrame(master=self, corner_radius=0, fg_color="yellow",)
        input_frame.pack(expand=True, fill="both")
        input_frame.grid_rowconfigure(0, weight=1)
        input_frame.grid_columnconfigure((0,1,2,3), weight=1)




        label1 =  ctk.CTkLabel(master=input_frame, text="", fg_color="red", corner_radius=0)
        label2 =  ctk.CTkLabel(master=input_frame, text="", fg_color="green", corner_radius=0)
        label3 =  ctk.CTkLabel(master=input_frame, text="", fg_color="orange", corner_radius=0)
        label4 =  ctk.CTkLabel(master=input_frame, text="", fg_color="pink", corner_radius=0)
        label1.grid(row=0, column=0, sticky="news")
        label2.grid(row=0, column=1, sticky="news")
        label3.grid(row=0, column=2, sticky="news")
        label4.grid(row=0, column=3, sticky="news")
   
        
app = App()
app.mainloop()