Multi-viewport: Dragging window from ImGuiTitleBar while maximized causes glitchy behavior

[OriolCS2]

Version/Branch of Dear ImGui:

1.92.6 WIP Docking

Back-ends:

imgui_impl_sdl3.cpp + imgui_impl_opengl3.cpp

Compiler, OS:

Windows 10 MSVC 2022

Details:

My Issue/Question:

When Viewports are enabled with OS Decorations, a bug occurs when dragging a single window that is currently maximized.

If you drag the window from the ImGui Title Bar, ImGui seems to lose the correct mouse coordinate reference, resulting in a significant offset and it is quite impossible to interact with anything.
Also resizing the window with the ImGui window resize bars, ends up with a rendering glitch.

The following video shows how I dragg the window from the ImGui Title Bar and then the mouse input position stop working. Also after this, I show the rendering glitch.

Bug.mp4

I've somehow fixed it restoring the window when ImGui wants to move its position at imgui_impl_sdl3.cpp like so:

As shown in the attached video, during the "restore" transition, the window momentarily appears at its pre-maximized coordinates for a few frames before snapping to the cursor. While this doesn't block functionality, it creates a jarring visual pop. I know this is not the final solution, but this doesn't block anything.

Workaround.mp4

Hope it helps!