Not sure if this is related to the Windows 11 problems I reported a while back. I'm now trying to run diligent with the imgui docking branch and I have successfully implemented the extended imgui renderer callbacks so that imgui can renderer into multiple windows with diligent. The problem I have is that the additional windows seem to lag a frame behind the main window. It looks like this:

The problem exists in all configurations on Windows 11 (dx11, dx12, vulkan backends, with and without vsync enabled), but it also exists on Windows 10 unless I disable vsync for all of the windows (which is not practical for a GUI app).

I'm closely following the code flow from the official imgui examples, which don't exhibit this problem on either W10 or W11. I'm using the imgui_impl_sdl2 platform backend (same as the examples I’m trying to mirror) so the only major difference is that I'm using Diligent and ImGuiDiligentRenderer to render the imgui data.

For example, the imgui example_sdl2_dx11 Presents the additional windows first without vsync, and finally Presents the main window with vsync and it works flawlessly on both W10 and W11. If I do the same with diligent, I get the lag problem on both W10 and W11.