Macos Finder / Terminal Weirdness

Working on my 'elder' iMac (High Sierra) I noticed that a directory I have been working in shows me files that are there. But in Terminal, viewing the same directory, I see files that should have been just deleted. The directory I'm working in is where I am converting .flac files to .mp3 with ffmpeg via a Perl script. Once converted, I delete the files via the Perl script. So why is there a difference between what Finder shows me and what Terminal shows me?

Results of ls -l /Volumes

~/Desktop/Colourbox - Disc 4 (2012) [user] ls -l /Volumes
total 8
drwxrwxr-x  25 user  admin   918 Jul 31 11:24 Backup3
lrwxr-xr-x   1 root  wheel     1 Sep  8 10:14 Macintosh HD -> /
drwxrwxr-x  13 root  wheel   510 Sep  8 11:16 Nano
drwxrwxrwx  33 user  wheel  1360 Sep  3 18:00 echo1
drwxrwxr-x+ 18 root  wheel   952 Jun 27 09:07 femto
drwxrwxr-x   9 user  wheel   544 Jul 30 17:02 ssd1
2021-09-08 11:43:44
~/Desktop/Colourbox - Disc 4 (2012) [user] 

Screen shots:

Relevant code is a couple of subroutines in a large script so will have to pull out only the code applicable.

It may be that my eyes are playing tricks on me, but it almost looks like in Finder you've navigated into a subdirectory of M-Sol Project whereas in Terminal you've navigated to a subdirectory of M–Sol Project. If these look identical to you, it's because I used an en dash (-) in the former and an em dash (Option-) in the latter. One is very slightly wider than the other, but they are two distinct characters and would result in two different folder paths.

Can you navigate to /Volumes/ssd1/httpd/public/local/music/data/ and see what ls -l gives you?