[Python] Why does my CTkTabview not occupy the whole window?

I have an issue where my CTkTabview only takes up ~2/3 of the screen vertically. I can't find why this is the case when looking at my code. Any help is really appreciated.

Here's my code:

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

self.grid_columnconfigure(0, weight=1)
self.grid_rowconfigure(0, weight=1)

self.homePage = TabView(self)
self.homePage.grid(column=0, row=0, sticky="nsew")

class TabView(customtkinter.CTkTabview):
def __init__(self, master):
super().__init__(master)
self.grid_columnconfigure(0, weight=1)
self.grid_rowconfigure(0, weight=1)

self.add("Tab")

self.tab("Tab").grid_columnconfigure(0, weight=1)
self.tab("Tab").grid_rowconfigure(0, weight=1)
self.tab("Tab").grid(column=0, row=0, sticky="nsew")


This code should take up make the tab view occupy the full window but it doesn't.

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