Right click "open with" opens directly without asking for a program

[Philippe Volte--Vieira]

I copied .txt files to my desktop folder (from NTFS external disk) and tried to open them but they were with right 777 (rwxrwxrwx) so press Enter (etc.) try to execute and not open the file with an editing program.
Then I rote a bug report (#1887514), understood my problem and changed the rights of the files.

But there is still a problem.

When I was trying to identify the problem, I tried "open with" on the right click menu. It worked (a window is opened and ask witch program I want to use). And after reporting bug 1887514 (that wasn't a bug) the option "open with" didn't opened anymore the window to choose a program. It opens directly as if I've selected "open".

It do the same to every new files I add to the desktop, and I already have rebooted my computer (it was some days ago).

I am not sure if the package I've selected is the right one for this problem, I don't know a lot about how Ubuntu is structured (and I don't know where I can find precise information).

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell-extension-desktop-icons 20.04.0-2~ubuntu20.04.1
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 16 16:20:32 2020
InstallationDate: Installed on 2020-07-12 (4 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-shell-extension-desktop-icons
UpgradeStatus: No upgrade log present (probably fresh install)