on_progres doesn't work fully

[NeUk1N]

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My progress bar is displayed with a delay, and when it appears, it is either with 100% or another large value.

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from pytubefix import YouTube
from pytubefix.cli import on_progress

url = "https://www.youtube.com/watch?v=25N1pdzvp4c"

yt = YouTube(url, on_progress_callback = on_progress)

ys = yt.streams.get_highest_resolution()

ys.download()

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When you start the program, a progress bar immediately appears with 0%, gradually filling up to 100%.

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Desktop (please complete the following information):

• OS: [Windows 10 Pro]
• Python Version [3.9.6]
• Pytubefix Version [15.0.0]

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Is it because I am using a proxy server when downloading?

[jhanley-com]

Insufficient information to debug.

I verified that the on_progress_callback works correctly on Windows 10 x64 today with PyTubeFix version 6.16.3.

I have been developing constantly for several months. I have never noticed a problem on Ubuntu or Windows. I suspect you have an issue with your code, but you did not include code to review that implements on_progress().