When you right click “save as”, once the download is complete, show all downloads, open the folder containing the file, Dolphin correctly opens the folder.
If the download is performed via the integrated PDF reader Firefox, I have the same error. Even as error during a download via the Flashgot addons.
I think it’s related with the presence of special characters in “Téléchargements”. I have a related issue where my “Téléchargements” place is not working in Firefox. I suspect an issue with encoding between Dolphin/KDE and the Firefox KDE patch?
This is a “bug” in Firefox.
When the download folder is different, or another hard drive, the line:
browser.download.dir (via about: config) is misinformed.
“///” Wrong value.
The removal of “//” corrects the problem.
(Though it means my bug is not related after all… Could you help me out and turn download to “Always ask me where to download files” and whether you can select places with special characters in the left column, like “Téléchargement”? You can place any folder there with a simple drag and drop)