[Bug 59063] New: Roblox Studio's place templates and child windows aren't rendering correctly under Vulkan

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59063

Bug ID: 59063
           Summary: Roblox Studio's place templates and child windows
                    aren't rendering correctly under Vulkan
           Product: Wine
           Version: 10.20
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: win32u
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 79834
  --> http://bugs.winehq.org/attachment.cgi?id=79834
Wine debugging log

When using Roblox Studio's native Vulkan renderer, the place templates
selection is pitch black (with the exception of the menu bar). Upon loading one
of the place templates, you'll notice that most of the child windows are pitch
black as well. Resizing one of these windows causes them to flicker rapidly.

Steps to reproduce:

1. Create an account on roblox.com (this is required in order to be able to log
into Roblox Studio, unfortunately).

2. Download the installer for Roblox Studio from the following link:
https://setup.rbxcdn.com/RobloxStudioInstaller.exe

Roblox Studio unfortunately autoupdates to the latest version, no matter what
version of the installer is used, so this may present issues regarding
reproducibility.

3. Create a desktop entry named "Roblox_Studio.desktop" with the following
contents (again, this is required in order to be able to log into Roblox
Studio). Replace <user> with the name of your user:

[Desktop Entry]
Name=Roblox Studio (modified)
Exec=env "WINEPREFIX=/home/<user>/.wine" wine
"C:\\users\\<user>\\AppData\\Roaming\\Microsoft\\Windows\\Start
Menu\\Programs\\Roblox\\Roblox Studio.lnk" %u
Type=Application
StartupNotify=true
Icon=2C11_RobloxStudioBeta.0
StartupWMClass=robloxstudiobeta.exe
MimeType=x-scheme-handler/roblox-studio-auth

4. Run the installer through Wine. This should also launch Roblox Studio itself
once the installation is complete. If not, run the RobloxStudioBeta.exe
executable that is located inside the Wineprefix.

5. Upon launching Roblox Studio, you will be greeted by an error prompting you
to login via your browser. Click on the "Login via Browser" button, then click
"Continue" on the newly spawned browser window.

6. Once you reached the place templates selection, click on the "File" menu on
the top left, then on "Studio Settings" and then on "Rendering" in the newly
spawned window, where you should change the "Graphics Mode" from "D3D11" to
"Vulkan". After that, relaunch Studio.

System Information:
OS: Arch Linux x86_64
Kernel: Linux 6.17.9-arch1-1
Display Server: Wayland (Niri)
GPU: AMD Radeon RX 6650 XT [Discrete]
Driver: Mesa 25.2.7-1

257364eb5f671b2fd63507373b0427b519dfa71d was the commit that caused this bug to
appear, so this is a regression.