Dragging secondary viewports out of main viewport about imgui HOT 5 OPEN

I think this is a duplicate of #3158, which links to an upstream issue in GLFW: glfw/glfw#1562
With a potential fix here: rokups@c510c11

Is that fix mergeable? I also see this on ImGui 1.90.8 under Linux/X11, so I'm happy to test things or work on improving that patch if you'd prefer a different fix. Multi-viewport support on Linux is critical for my usecase so I'm quite motivated to help out where I can :)

(though this particular bug doesn't personally bother me much)

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I forgot to mention, but I am using CMake to compile imgui to a library and then using it

are there any plans to add official CMake support for imgui?

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Which version of GLFW are you using?

Currently the GLFW backend under systems other than Windows seems to be calling a different codepath, where it is possible that a combination of what GLFW does and what the WM does means you lose mouse inputs while dragging.

Please confirm GLFW version and open Tools->Debug Log->IO and capture IO log at the time of extracting a window into its own viewport.

With GLFW 3.3 we normally call:

    glfwWindowHint(GLFW_FOCUS_ON_SHOW, false);

https://github.com/ocornut/imgui/blob/docking/backends/imgui_impl_glfw.cpp#L122C9-L122C41

And there's a workaround for older versions but it's Windows only:
https://github.com/ocornut/imgui/blob/docking/backends/imgui_impl_glfw.cpp#L1128

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I am using GLFW 3.5, I did notice imgui came with GLFW 3.3

[04951] [io] Processed: MouseButton 0 Up (Mouse)
[04951] SetActiveID() old:0xB89D6EE5 (window "Dear ImGui Debug Log") -> new:0x00000000 (window "")
[04952] [dragdrop] ClearDragDrop()
[04952] [viewport] Destroy Platform Window 8E350B18 'Dear ImGui Debug Log'
[04953] [viewport] Focused viewport changed 8E350B18 -> 11111111, attempting to apply our focus.
[04953] [viewport] Delete Viewport 8E350B18 'Dear ImGui Debug Log'
[04954] [io] Processed: AppFocused 0
[04954] [io] Processed: AppFocused 1

It seems to be destroying old window and creating a new window?

i forked on this commit: 7237d3e

video: https://media.discordapp.net/attachments/844849219504046154/1254947933447651348/imgui.webm?ex=667b58d7&is=667a0757&hm=d9aec2d766ce8380f9791afa297f3189d3c6db95eadbbe12ae3b37b8d9ec3b13&

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The video link is invalid.
I guess the question is to understand why you are getting the MouseButton 0 up event there.

At this point frankly I am considering to stop supporting multi-viewport under Linux since it's so complicated under this OS and we don't have any serious/focused contributor using Linux.

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