The delete key itself also works if you have a specific file selected in the file explorer. In order to select a file, you have to SHIFT and click (if you just click a file in the explorer, the focus will immediately jump to the active file, which makes absolutely sense).
As I said before, you can select files (and also folders) via SHIFT and Click. Once selected, you can also use the keyboard (up and down arrow keys) to navigate, or expand your selection (here again in combination with SHIFT).
It is working for me. Anyway, try updating to the latest installer version - I think there has been an electron update recently (don’t know if that solves your problem, but worth a try).
What is your setting for creating new files? (under settings → files and links). This is the location where new files are created if you either use the button on the upper left or a hotkey. “Current folder”, in this case, means the folder your currently active note is living in (not the currently selected folder!).
You can, though, create a file by right-clicking a folder and select “new file”.
Browse to your file system and delete them from there.
That’s odd. It isn’t working for me. I can’t select a single folder. And if hit shift-click, it will sometimes select a group between the currently active note, and the folder I’m clicking. Or if it appears to select one empty folder, right-clicking will show a number that is higher than one. So I end up with too many things selected. If you tested deleting something, double check you didn’t delete some unintended things.
(But I’m due for a new installer download maybe. Installer 1.1.9 here. Edit: Updating made no difference.)
I’m using that setting and it does work out for the “obvious” files like daily notes, where it’s easy to know the folder. Or if I’m in a project of sorts so all files are related to that.
However, if the folder is not known I don’t use the top menu to create new stuff, but I rather right-click the folder and create it from there. I’m not sure if there is a delete option as well in the right-click menu, since I’m rarely deleting folders (and currently on mobile so I can’t check).