Changing a tab's label while using ImGuiTabBarFlags_Reorderable, auto-reorders the tab as last.

[immortalx74]

Version: 1.87
Branch: docking

Back-end: imgui_impl_sdl, imgui_impl_sdlrenderer
Compiler: MSVC
Operating System: Windows 11

My Issue/Question:
Using ImGuiTabBarFlags_Reorderable and changing an existing tab's label, causes said tab to be reordered as last.
This is demonstrated in the minimal example bellow. If you remove the flag, the tab's label can be changed without it automatically getting reordered.

The comment in imgui.h does mention this: "+ New tabs are appended at the end of list", so I guess when using the flag, ImGui considers this is a new tab, since it's label has changed?
How could I have manually-reorderable tabs and still be able to change their labels, while keeping the order untouched if there was no user interaction?

static std::string first_tab_label = "first tab";
static std::string second_tab_label = "second tab";

ImGui::Begin( "MyWindow" );
if ( ImGui::Button( "change first tab's label" ) )
{
	first_tab_label = "first tab just changed";
}
if ( ImGui::BeginTabBar( "MyTabBar", ImGuiTabBarFlags_Reorderable ) )
{
	if ( ImGui::BeginTabItem( first_tab_label.c_str() ) )
	{
		ImGui::EndTabItem();
	}
	if ( ImGui::BeginTabItem( second_tab_label.c_str() ) )
	{
		ImGui::EndTabItem();
	}
	ImGui::EndTabBar();
}
ImGui::End();

[ocornut]

This is answered in the FAQ:
https://github.com/ocornut/imgui/blob/master/docs/FAQ.md#q-about-the-id-stack-system

If you change the tab label by default it change the ID as well, from dear imgui point of view it is a new tab.
Use ### operator to change label while preserving same ID.