Konqueror seems unable to understand that using FISH, the URL should either have a SLASH at the end, or some file extension.  So, when it forgets the slash, file management becomes flakey, read my steps to reproduce, and test it yourselves.

i.e.  
fish://user@anyserver:someport/tmp/test/   is a correct URL for a remote folder
fish://user@anyserver:someport/tmp/test    is NOT a correct URL for a remote folder
fish://user@anyserver:someport/tmp/test/crap.txt  is the URL of a file on a remote server

Reproducible: Sometimes

Steps to Reproduce:
OK, 
1. if I fish to: fish://user@anyserver:someport/tmp/test/   (observe the last slash in the URL)
2. and I bookmark this.
3. then I close konqueror, and I reopen it
4. navigate to a local folder, say /tmp/localfolder/
5. Then I split the window vertically
6. on the right pane, I load the bookmarked FISH location
7. I notice that the last "slash" is missing ! !!!!!!!!!!??????????!!!!!!!!!!!!!!! (why?)
8. sometimes, and sometimes not, I get the file listing on the remote server
9. when I don't get the listing, I see the Konqueror Icon rotating on the top right, forever
10. If I hit stop and reload, it will keep waiting forever
11. If I hit stop and then add a slash at the end of the fish folder, and then press Enter, the file list loads !

BONUS points:
12. If, by any chance the file list had loaded without the last slash in the URL (see step 8), and I then try to say copy all the remote files to my local folder, it will bring up the copy dialog box, and just keep thinking forever.
13. if I then cancel the copy, then add the slash to the URL and hit enter (getting the file listing again), I can then copy the files without any problems.

BTW, the loss of slash in the URL is endemic, I have seen this since day 1 in Konqueror.
Actual Results:  
Flakey file management, sometimes file list is shown, sometimes not.
Sometimes copying files works, and sometimes not.

Expected Results:  
One would expect Konqueror to "append" the last slash to a folder, or at least remember it properly in the Bookmarks.

The error is haphazard, it sometimes happens, and sometimes not, mostly it will keep happening when connecting to a specific server, and other servers will work fine.

Also, sometimes a server will work fine with or without slash in the URL, and suddenly stop working  (without any change to the server in question, or local machine)