The element doesn't want to be selected

[ghost]

Hello.
I am trying to select item from table but it's not selecting. When i change the text, all works.
https://user-images.githubusercontent.com/126063817/220577306-297fc741-b451-45b8-87f9-d48530200867.mp4
Here is a code:

bool openned = false;

struct n {
	string first;
	string second;
};

vector<n> items;
int current_index = 0;

void gui::Render() noexcept
{
	ImGui::ShowDemoWindow();
	if (!openned) {
		ImGui::SetNextWindowSize(ImVec2(800, 600));
		ImGui::SetNextWindowPos(ImVec2(10, 10));
		for (int i = 0; i < 5; i++) {
			n newdata = {"blah", "blah"};
			items.push_back(newdata);
		}
		openned = true;
	}

	ImGui::Begin("bug?");

	char first[128];
	strcpy_s(first, items[current_index].first.c_str());
	if (ImGui::InputText("First Name", first, IM_ARRAYSIZE(first))) {
		items[current_index].first = (string)first;
	}

	char second[128];
	strcpy_s(second, items[current_index].second.c_str());
	if (ImGui::InputText("Last Name", second, IM_ARRAYSIZE(second))) {
		items[current_index].second = (string)second;
	}

	if (ImGui::BeginTable("##table", 2, ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_Borders)) {
		ImGui::TableNextColumn(); ImGui::TableHeader("First Name");
		ImGui::TableNextColumn(); ImGui::TableHeader("Last Name");
		for (size_t i = 0; i < items.size(); i++) {
			ImGui::TableNextRow();
			ImGui::TableNextColumn();
			bool is_selected = (current_index == i);
			if (ImGui::Selectable(items[i].first.c_str(), is_selected, ImGuiSelectableFlags_SpanAllColumns)) {                            
				current_index = i;
			}   	
			ImGui::TableNextColumn();	
			ImGui::Text(items[i].second.c_str());
		}
		ImGui::EndTable();
	}

	ImGui::End();
}

Is this a bug or did I make an error in the code? Thank you

[ocornut]

Hello,

You have an ID conflict. Read about our ID system in the FAQ:
https://github.com/ocornut/imgui/blob/master/docs/FAQ.md#q-about-the-id-stack-system

Most of the times in a loop submitting items you'd want to surround your item submission with PushID(index); ... PopID();.
This is also demonstrated in the various tables demo we have in imgui_demo.cpp.