In the following code: 
```py
import tkinter as tk
from tkinter import ttk

import ctypes
ctypes.windll.user32.SetProcessDPIAware()

w = tk.Tk()
ttk.Checkbutton(w, text = "Checkbox").grid()
w.mainloop()
```

The checkbox begins as normal size, but after hovering over it, it becomes small. See attached gif.

The issue does not occur without the SetProcessDPIAware call. 

I am running Windows 11, and my screen resolution is 2560x1440. My Settings>System>Display>Custom Scaling is set to 150%. I believe that this is relevant because SetProcessDPIAware() directly affects the dpi awareness (aka 'custom scaling') of the program, according to Microsoft documentation.