We decided the latter is to small an issue, we'll close this ticket without opening another for the reverse case.
Tested only in VS-Desktop-3.1.92.39-Beta yet

I created a pubkey (actually a subkey) for your above test keys:

I don't see a problem here. Of course Kleopatra could run a gpgconf -K all when it really exits but I doubt that we need to do that in this special elevated case

Fixed (for GnuPG 2.4). I hope 2.2 prints the same status messages.

The General Error happens also when the PIN is blocked and no Pinentry opens.
As in this case, where the indicated "Generate New Keys" button was used on a blocked card.

This change also avoids the accessibility problem (from the report) that tool tips close automatically if one moves the mouse cursor out of the tool tip.

The following patch works.

I use this for testing:

Pretty obvious. RENC is an allowed usage for an RSA key and thus set in the mask. I restricted this but allowed to set it anyway when using the "=sr" shortcut (here to set as signing and R-enc). Thanks for reporting.

I'm wondering whether it wouldn't be better to rename (or copy) the icon to pinentry.png. It's weird if a program installs an icon with a generic name in a generic location.

I think the DocAction idea doesn't really work well because it leads to empty submenus and bogus actions in the toolbar configuration and the keyboard shortcut configuration in builds that don't include the PDFs. And now, it seems, checking whether a file exists isn't enough anymore.

In T7064#184630, @TobiasFella wrote:

Can you clarify on what the show parameter is intended to do? I don't yet see how it would be useful, as the distinction between VSD and gpg4win is already made by whether the respective file is present or not

I assume the support answers helped, therefore closing this.
In case there is evidence of a bug please give more information and reopen the ticket.

Sorry, I did not know (or had forgotten, I did search the tracker first).
What is the rationale for not signing the uninstallers?