So, i've been learning a bit of tkinter and i've just found out that some things like buttons work differently from windows to linux... On windows everything works fine but on linux, when i over the button (with an image) it glows and, honestly, i can't figure out how to fix this.
from tkinter import *
import tkinter as tk
import PySimpleGUI as sg
root = tk.Tk()
root.title("Test")
root.geometry("500x500")
close_icon = PhotoImage(file='assets/Close Button.png')
close_button = tk.Button(root, image=close_icon, command=root.destroy, borderwidth=0)
close_button.pack()
if __name__ == "__main__":
root.mainloop()
What it should always look like:

What it looks like when i hover it:
