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ImGui_ImplWin32_UpdateMousePos() function in imgui_impl_win32.cpp

Code:
if (HWND active_window = ::GetForegroundWindow())
if (active_window == g_hWnd || ::IsChild(active_window, g_hWnd))
if (::GetCursorPos(&pos) && ::ScreenToClient(g_hWnd, &pos))
io.MousePos = ImVec2((float)pos.x, (float)pos.y);

Replace (New Code):
if (::GetActiveWindow() == g_hWnd && ::GetCursorPos(&pos))
if (::ScreenToClient(g_hWnd, &pos))
io.MousePos = ImVec2((float)pos.x, (float)pos.y);

When the window size changes, the mouse position will be misplaced

When the menu is open and I interact with it FPS 144, when I close the menu FPS drops to + -20. (like it becomes an inactive window).
I don’t read memory, etc., generally an empty project.
Other games and applications do not have this problem.