Why do I only need to enter the password once when extracting the same encrypted zip file multiple times, even though I don't save the password in keka?

[leesa666]

Keka version: 1.3.5 (5269) macOS version: 14.0 (23A344)

I didn't save the password in keka, but keka can still extract the same encrypted zip file, just like in the video, why?

https://github.com/aonez/Keka/assets/71816209/bf4b3ccc-0b15-4114-8cab-76d0f149c4df

I'm not sure if this is a feature of keka or a bug, because when I use other apps to extract encrypted zips, even the same file requires me to enter the password every time.