Saved files are not visible in lakehouse web interface

Hi, 

I want to make a dailiy backup of my PBI reports with notebook script and i came across unexpected problem where when i try to save file in lakehose it is simply not visible in folder even after some time (5 mins). 
Here is a simple example to ilustrate. 

So when i run this notebook to save simple file, and then to read it and list directory content i can see that file is saved in Files folder, nowever web interface is showing that this folder doesnt have any content.

import os

# Define the content and the filename
text_content = "This is the content of the text file."
directory = "Files"
filename = os.path.join(directory, "filename.txt")

# Example usage
directory = "Files"
delete_folder(directory)

# Create the directory if it does not exist
if not os.path.exists(directory):
    os.makedirs(directory)

# Write the content to the file
with open(filename, "w") as file:
    file.write(text_content)
    
# Read the content of the file
try:
    with open(filename, "r") as file:
        content = file.read()
    print("File content:")
    print(content)
except FileNotFoundError:
    print(f"The file {filename} does not exist.")
except IOError as e:
    print(f"An IOError occurred: {e}")

# List files and directories in the specified directory
try:
    files_and_dirs = os.listdir(directory)
    print("Files and directories in '", directory, "':")
    for item in files_and_dirs:
        print(item)
except FileNotFoundError:
    print(f"The directory {directory} does not exist.")
except PermissionError:
    print(f"Permission denied to access {directory}.")