CustomTkinter giving error after destroy a window

Question

I have a window in customtkinter, version 5.20, with a button to destroy it:

import customtkinter as ctk

# window 1
window1 = ctk.CTk()
window1.geometry('400x300')

ctk.CTkButton(window1, text = 'Destroy', command = window1.destroy).pack(expand = True)

window1.mainloop()

The code works fine as it should be, but if after destroy the window I want to create a second one:

# window 2
window2 = ctk.CTk()
window2.geometry('400x300')
window2.mainloop()

Then the code give me this error:

invalid command name "2036367448128update"
    while executing
"2036367448128update"
    ("after" script)
invalid command name "2036367449792check_dpi_scaling"
    while executing
"2036367449792check_dpi_scaling"
    ("after" script)
invalid command name "2036367445824_click_animation"
    while executing
"2036367445824_click_animation"
    ("after" script)

The code works and the second window is created, but I don't get what this error means.

I tried to write this in Tkinter and it doesn't give me any error:

import tkinter as tk

# window 1
window1 = tk.Tk()
window1.geometry('400x300')

tk.Button(window1, text = 'Destroy', command = window1.destroy).pack(expand = True)

window1.mainloop()

# window 2
window2 = tk.Tk()
window2.geometry('400x300')
window2.mainloop()

I also tried to use quit() instead of destroy(), but the first window is not closed and just create the second one.