[v3] When HiddenOnTaskbar is set to true, mouse clicks behave abnormally

[sugar-is-everythong]

Description

When HiddenOnTaskbar is set to true, using Windows+D or Alt+Tab to switch windows causes abnormal click events on the entire screen. It affects the entire screen, but switching windows with the keyboard works normally. However, clicking on the Wails window again will cause the issue to reoccur, making it unclickable

To Reproduce

After creating a project using the official CLI, just add one HiddenOnTaskbar: true to make it appear

Expected behaviour

Hope HiddenOnTaskbar: true can be used normally

Screenshots

No response

Attempted Fixes

If setting ExStyle to w32.WS_EX_TOOLWINDOW can solve this situation, but it will also cause some window issues, such as certain windows failing to deactivate

System Details

┌───────────────────────────────────────────────────────────────────────────────────────────────────┐
| Name              | Windows 10 IoT Enterprise LTSC 2021                                           |
| Version           | 2009 (Build: 19044)                                                           |
| ID                | 21H2                                                                          |
| Branding          | Windows 10 IoT 企业版 LTSC                                                    |
| Platform          | windows                                                                       |
| Architecture      | amd64                                                                         |
| Go WebView2Loader | true                                                                          |
| WebView2 Version  | 142.0.3595.94                                                                 |
| CPU               | Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz                                       |
| GPU 1             | AMD Radeon HD 8350 (Advanced Micro Devices, Inc.) - Driver: 15.201.1101.1001  |
| GPU 2             | GameViewer Virtual Display Adapter (GameViewer) - Driver: 17.13.25.697        |
| Memory            | 32GB                                                                          |
└───────────────────────────────────────────────────────────────────────────────────────────────────┘

# Build Environment 

┌─────────────────────────────────────────────────────────────────────────────────────────────────────┐
| Wails CLI      | v3.0.0-alpha.41                                                                    |
| Go Version     | go1.25.4                                                                           |
| -buildmode     | exe                                                                                |
| -compiler      | gc                                                                                 |
| CGO_ENABLED    | 0                                                                                  |
| DefaultGODEBUG | containermaxprocs=0,decoratemappings=0,tlssha1=1,updatemaxprocs=0,x509sha256skid=0 |
| GOAMD64        | v1                                                                                 |
| GOARCH         | amd64                                                                              |
| GOOS           | windows                                                                            |
└─────────────────────────────────────────────────────────────────────────────────────────────────────┘

# Dependencies 

┌────────────────────────────────────────────┐
| npm                        | 11.4.2        |
| NSIS                       | Not Installed |
| MakeAppx.exe (Windows SDK) | Not Installed |
| MSIX Packaging Tool        | Not Installed |
| SignTool.exe (Windows SDK) | Not Installed |
|                                            |
└───────── * - Optional Dependency ──────────┘

Additional context

No response

[github-actions]

👋 Thanks for reporting this issue! To help us investigate, could you please:

1. Add the output of wails doctor if not already included
2. Provide clear steps to reproduce the issue
3. If possible, create a minimal reproduction of the issue

This will help us resolve your issue much faster. Thank you!

[leaanthony]

I wanted to bring to your attention that PR #5010 changes HiddenOnTaskbar to use WS_EX_TOOLWINDOW instead of WS_EX_NOACTIVATE, which may help address the issues you mentioned with Win+D and Alt+Tab clicks.

Could you please test a build or branch with PR #5010 (copilot/fix-issues-from-discussion-5001) and let us know if it resolves the abnormal mouse clicks and/or keyboard focus issues? Your feedback would be greatly appreciated!

[leaanthony]

Triage notes:

• Classification: Bug (v3, Windows) — HiddenOnTaskbar causes click-through issues across the entire screen
• Labels applied: v3 (was missing)
• Action: Dispatched to engineer for investigation and fix

CC @leaanthony