Not sure if this should be entered into the Desktop Environment (XFCE, Gnome,...) instead.

What desktop environment are you using? I'm testing it in Xfce with the newest Kali release and I can't reproduce it

I apologize for my delay in responding on this. The DE I'm currently using on my Kali bare-metal install is Cinnamon.
Regarding this topic/issue, I have figured out a work-around/solution to the issue at hand:
I had figured out (a few days/a week after posting this issue) that, when naming the compressed file, if I made sure to include ".zip" at the end of the file name (even tho ".zip" is the selected extension), then the compressed file will appear with the given/typed name.
Previous to my post, it was not a requirement to include ".zip" at the end of the file name being given to the compressed file being created - I assume this changed after an update.

I've also noticed that there must've been another, recent update, because now, if you do not include ".zip" in the file name, I am not able to even create the compressed file. Only after adding ".zip" to the file name can the compressed file be created.
IMO its a bit redundant to require the file name include the extension at the end of the file name, and then also be required to select the extension in which the compressed file should be (i.e., .zip).

In any case, I would say that this issue can now be marked as resolved. Things are working "properly" (albeit a bit differently than before), and I see no further issue.
Thanks for your time, folks!