If there are enough steps in the loop so that the increment is small enough, it can happen that tqdm shows 100% even though the process hasn't finished yet. This is the default behavior and I think it should be changed to stop at 99% before actually finishing.

MVE:

from time import sleep
from tqdm.cli import tqdm

n = 1000
for idx in tqdm(range(n)):
    if idx == n-1:
        break
    sleep(1/n)

I know it's possible to change the bar format to show decimals, e.g.

from time import sleep
from tqdm.cli import tqdm

n = 1000
for idx in tqdm(range(n), bar_format = "{desc}: {percentage:.1f}%|{bar}| {n_fmt}/{total_fmt} [{elapsed}<{remaining}]"):
    if idx == n-1:
        break
    sleep(1/n)

but this probably isn't an acceptable solution for everyone.