Tooltip will keep auto expanding if there are 2 tables inside

[Kyuusokuna]

Dear ImGui 1.77 WIP (17601)
--------------------------------
sizeof(size_t): 8, sizeof(ImDrawIdx): 2, sizeof(ImDrawVert): 20
define: __cplusplus=201703
define: _WIN32
define: _WIN64
define: _MSC_VER=1925
define: __clang_version__=10.0.0 
define: IMGUI_HAS_VIEWPORT
define: IMGUI_HAS_DOCK
--------------------------------
io.BackendPlatformName: imgui_impl_win32
io.BackendRendererName: imgui_impl_dx11
io.ConfigFlags: 0x0000C441
 NavEnableKeyboard
 DockingEnable
 ViewportsEnable
 DpiEnableScaleViewports
 DpiEnableScaleFonts
io.ConfigViewportsNoDecoration
io.ConfigInputTextCursorBlink
io.ConfigWindowsResizeFromEdges
io.ConfigWindowsMemoryCompactTimer = 60.0f
io.BackendFlags: 0x00001C0E
 HasMouseCursors
 HasSetMousePos
 PlatformHasViewports
 HasMouseHoveredViewport
 RendererHasVtxOffset
 RendererHasViewports
--------------------------------
io.Fonts: 1 fonts, Flags: 0x00000000, TexSize: 512,64
io.DisplaySize: 1264.00,761.00
io.DisplayFramebufferScale: 1.00,1.00
--------------------------------
style.WindowPadding: 8.00,8.00
style.WindowBorderSize: 1.00
style.FramePadding: 4.00,3.00
style.FrameRounding: 0.00
style.FrameBorderSize: 0.00
style.ItemSpacing: 8.00,4.00
style.ItemInnerSpacing: 4.00,4.00

Version/Branch of Dear ImGui:

Version: 1.77 WIP
Branch: Tables merged into docking

Back-end/Renderer/Compiler/OS

Back-ends: imgui_impl_win32.cpp + imgui_impl_dx11.cpp
Compiler: clang 10
Operating System: Windows 10

My Issue/Question:

If there are 2 tables in a tooltip the tooltip will keep auto expanding.
I could not make this happen with only 1 table.

Screenshots/Video

Standalone, minimal, complete and verifiable example:

ImGui::Begin("Bug Report");

ImGui::Text("Test Tooltip");
if(ImGui::IsItemHovered()) {
    ImGui::BeginTooltip();
    
    if(ImGui::BeginTable("Table1", 2)) {
        ImGui::TableSetupColumn("Header1");
        ImGui::TableSetupColumn("Header2");
        
        ImGui::TableAutoHeaders();
        
        ImGui::TableNextRow();
        
        ImGui::TableSetColumnIndex(0);
        ImGui::Text("%s", "Test1");
        
        ImGui::TableSetColumnIndex(1);
        ImGui::Text("%s", "Test2");
        
        ImGui::EndTable();
    }
    
    if(ImGui::BeginTable("Table2", 2)) {
        ImGui::TableSetupColumn("Header3");
        ImGui::TableSetupColumn("Header4");

        ImGui::TableAutoHeaders();
            
        ImGui::TableNextRow();
        
        ImGui::TableSetColumnIndex(0);
        ImGui::Text("%s", "Test3");
        
        ImGui::TableSetColumnIndex(1);
        ImGui::Text("%s", "Test4");
        
        ImGui::EndTable();
    }
    
    ImGui::EndTooltip();
}
ImGui::End();

[ocornut]

Hello,
Thanks for reporting this!
This should now be fixed by 9d0789d
In addition, the way non-scrolling-x tables reported their contents wasn't enough for 01f30a2 adds some fixes to makes AlwaysAutoResize windows such as tooltip use a best-fit width in that situation.