Tables: fixed an issue where submitting non-integer row heights would eventually advance table parent layout by +0/+1 depending on its visibility.

Author: ocornut

docs/CHANGELOG.txt

@@ -58,6 +58,8 @@ Other Changes:
   - Fixed an issue where a very thin scrolling table would advance parent layout
     slightly differently depending on its visibility (caused by a mismatch
     between hard minimum window size and table minimum size).
+  - Fixed an issue where submitting non-integer row heights would eventually
+    advance table parent layout by +0/+1 depending on its visibility.
 - Scrollbar: fixed a codepath leading to a divide-by-zero (which would not be
   noticeable by user but detected by sanitizers). (#9089) [@judicaelclair]
 - Backends:

imgui_tables.cpp

@@ -1383,7 +1383,7 @@ void    ImGui::EndTable()
     inner_window->DC.PrevLineSize = temp_data->HostBackupPrevLineSize;
     inner_window->DC.CurrLineSize = temp_data->HostBackupCurrLineSize;
     inner_window->DC.CursorMaxPos = temp_data->HostBackupCursorMaxPos;
-    const float inner_content_max_y = table->RowPosY2;
+    const float inner_content_max_y = ImCeil(table->RowPosY2); // Rounding final position is important as we currently don't round row height ('Demo->Tables->Outer Size' demo uses non-integer heights)
     IM_ASSERT(table->RowPosY2 == inner_window->DC.CursorPos.y);
     if (inner_window != outer_window)
         inner_window->DC.CursorMaxPos.y = inner_content_max_y;