ImDrawList: PushColumnsBackground(): Fixed incorrect assert. (#3163)

imgui_widgets.cpp

@@ -7553,7 +7553,7 @@ void ImGui::PushColumnsBackground()
     int cmd_size = window->DrawList->CmdBuffer.Size;
     PushClipRect(columns->HostClipRect.Min, columns->HostClipRect.Max, false);
     IM_UNUSED(cmd_size);
-    IM_ASSERT(cmd_size == window->DrawList->CmdBuffer.Size); // Being in channel 0 this should not have created an ImDrawCmd
+    IM_ASSERT(cmd_size >= window->DrawList->CmdBuffer.Size); // Being in channel 0 this should not have created an ImDrawCmd
 }
 
 void ImGui::PopColumnsBackground()