INNO Setup always installs into admin's AppData directory

I want to store my app in the current user's AppData directory to avoid problems with permissions we had when auto-updating our app (when it's stored in Program Files). We don't give the user the option of where to install the app. We've had complaints from non-admin users that the installer stores the app in the admin's AppData directory (after UAC of course), instead of the current user's AppData directory, which then prevents the app from running in the future.

Firstly, I had DefaultDirName={userappdata}\{#MyAppName}. Then I tried DefaultDirName={commonappdata}\{#MyAppName}. Then I tried that along with PrivilegesRequired=latest and even as PrivilegesRequired=none as the Make InnoSetup installer request privileges elevation only when needed question suggested.

This is my script as of right now in case I'm missing something obvious:

; Script generated by the Inno Setup Script Wizard.
;SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!

#define MyAppName "Teamwork Chat"
#define MyAppVersion "0.10.0"
#define MyAppPublisher "Digital Crew, Ltd."
#define MyAppURL "http://www.teamwork.com/"
#define MyAppExeName "TeamworkChat.exe"

[Setup]
; NOTE: The value of AppId uniquely identifies this application.
; Do not use the same AppId value in installers for other applications.
; (To generate a new GUID, click Tools | Generate GUID inside the IDE.)
AppId={{0F063485-F5AF-4ADE-A9F9-661AB3BAA661}
AppName={#MyAppName}
AppVersion={#MyAppVersion}
;AppVerName={#MyAppName} {#MyAppVersion}
AppPublisher={#MyAppPublisher}
AppPublisherURL={#MyAppURL}
AppSupportURL={#MyAppURL}
AppUpdatesURL={#MyAppURL}
DefaultDirName={userappdata}\{#MyAppName}
DisableDirPage=yes
DefaultGroupName={#MyAppName}
OutputDir=E:\chat-client\dist
OutputBaseFilename={#MyAppName}_for_Windows32_Installer-{#MyAppVersion}
SetupIconFile=E:\chat-client\icons\teamwork_chat.ico
WizardImageFile=E:\chat-client\icons\chatWizardImageFile.bmp
Compression=lzma
SolidCompression=yes
PrivilegesRequired=none

[Languages]
Name: "english"; MessagesFile: "compiler:Default.isl"

[Tasks]
Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked

[Files]
Source: "E:\chat-client\dist\TeamworkChat\win32\TeamworkChat.exe"; DestDir: "{app}"; Flags: ignoreversion
Source: "E:\chat-client\dist\TeamworkChat\win32\ffmpegsumo.dll"; DestDir: "{app}"; Flags: ignoreversion
Source: "E:\chat-client\dist\TeamworkChat\win32\icudtl.dat"; DestDir: "{app}"; Flags: ignoreversion
Source: "E:\chat-client\dist\TeamworkChat\win32\libEGL.dll"; DestDir: "{app}"; Flags: ignoreversion
Source: "E:\chat-client\dist\TeamworkChat\win32\libGLESv2.dll"; DestDir: "{app}"; Flags: ignoreversion
Source: "E:\chat-client\dist\TeamworkChat\win32\nw.pak"; DestDir: "{app}"; Flags: ignoreversion
; NOTE: Don't use "Flags: ignoreversion" on any shared system files

[Icons]
Name: "{group}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"
Name: "{commondesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon

[Run]
Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName, '&', '&&')}}"; Flags: nowait postinstall skipifsilent

Edit

I've changed two options but still no luck;

PrivilegesRequired=lowest
...
[Icons]
...
Name: "{userdesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon

Edit 2:

I've added the runasoriginaluser flag and generated a new AppId (GUID) but still no luck;

[Run]
Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName, '&', '&&')}}"; Flags: nowait postinstall skipifsilent runasoriginaluser

Edit 3:

I've created a simple GitHub repository with the source files and INNO script.

Edit 4:

I had been testing on Windows 8.1. It seems to work when compiled on Windows 7, and ran on Windows 8, but not when compiled on 8 and ran on 8.

Edit 5:

It's solved now but to clear things up regarding Edit 4, it wasn't working only on my machine. It worked on other Windows 8 machines. Must've been some weird caching or something (even though I changed the AppId).