I use KDE Plasma 5.19.5 (Kubuntu 20.10) Chromium Version 89.0.4389.114 (Official Build) snap (64-bit) Dolphin is my default File manager and I customised its favourites and use single click to open files and directories.
The issue I have (and I spent many hours looking for an answer) is that when I save anything from Chromium, it saves using a "Save File" window that forces me to double click, shows files and folders in mixed up in alphabetical order and no favourites.
I have no idea as to what File Manager Chromium insists on using and I would like to force it to use Dolphin.
Can anyone please show me or point me to a solution?
EDIT: @Archisman I followed your instructions by here askubuntu.com/a/1206153/124466 and it all worked well, however even though the first instruction was to uninstall the existing version of Chromium, I now have two Chromiums one Snap and one Deb. The Deb one invokes Dolphin when saving or printing to PDF, so it solved my problem, however I now would like to remove the Snap version without damaging the Dep ones.... Could you please tell me how to do it safely?