CTkButton doesn't redraw correctly after maximizing the window

[Alte77]

A code example:

import customtkinter as ctk

app = ctk.CTk()

app.geometry("600x600")

bottomButtons = ctk.CTkFrame(app)
bottomButtons.pack(side="bottom",fill="x")

ctk.CTkButton(bottomButtons, text="Right").pack(side="right")
ctk.CTkButton(bottomButtons, text="Left").pack(side="left")

app.mainloop()

When I open the app it looks like this:

But when I maximize the windows it looks like this:

And it fixes himself after I hover over the button. How can I fix this? I have tried many things already. I recreated the code in the normal tkinter libray for python and it works normally.

[dipeshSam]

If you want a workaround to fix this, you may bind a Configure Event with the frame containing the button, and then force redraw over that frame using .update().

import customtkinter as ctk

app = ctk.CTk()

app.geometry("600x600")

bottomButtons = ctk.CTkFrame(app)
bottomButtons.pack(side="bottom",fill="x")

bottomButtons.bind("<Configure>", lambda e: bottomButtons.update())


ctk.CTkButton(bottomButtons, text="Right").pack(side="right")
ctk.CTkButton(bottomButtons, text="Left").pack(side="left")

app.mainloop()

[Alte77]

I tried that but it doesn't seem to change anything, I also tried with update_idletasks() and nothing.

I noticed that when I maximize the window "manually", I mean, dragging the borders of the window near the edges of my screen then maximizing the button doesn't break. I would say that the problem is my resolution or screen configuration but normal tinker work properly so I really don't know.

I use Linux CachyOS but I tried it in Ubuntu just to see and it works normally, so I guess the problem it's my linux distro smh.

[dipeshSam]

If it works on Tkinter, it must work on CustomTkinter as well. There is no problem with the Linux distro. This is a problem with CustomTkinter's core rendering, and it might be resolved in future updates. Thank you for reporting it.

Regards.

[FedericoSpada]

Hi,
Please, try to see if the problem is still present after all the changes I've performed in this repository.
If yes, try to change the drawing method to see if it breaks only with the one you are using. You can force a different drawing method by calling the following immediately after importing CustomTkinter:

ctk.BaseShape.preferred_drawing_method = "circles"

If it works on Tkinter, it must work on CustomTkinter as well. There is no problem with the Linux distro. This is a problem with CustomTkinter's core rendering, and it might be resolved in future updates. Thank you for reporting it.

Regards.

I don't think it's entirely true: if tk.Button is used, the comparison is not apples-to-apples, since ctk.CTkButton is actually a tk.Canvas where some shapes are drawn to resemble a button.
There are also other reported bugs that appear only on Linux and with vanilla tkinter, too. In this specific case, if it works on one distro but not the other, CustomTkinter is probably not the main culprit.