add warning

egui_extras/src/grid.rs

@@ -20,7 +20,9 @@ pub struct GridBuilder<'a> {
 }
 
 impl<'a> GridBuilder<'a> {
-    /// Create new grid builder
+    /// Create new grid builder.
+    ///
+    /// In contrast to normal egui behavior, cells do *not* grow with its children!
     ///
     /// After adding size hints with `[Self::column]`/`[Self::columns]` the grid can be build with `[Self::horizontal]`/`[Self::vertical]`.
     ///

egui_extras/src/table.rs

@@ -26,6 +26,7 @@ impl<'a> TableBuilder<'a> {
     ///
     /// | fixed size | all available space/minimum | 30% of available width | fixed size |
     ///
+    /// In contrast to normal egui behavior, cells do *not* grow with its children!
     /// Takes all available height, so if you want something below the table, put it in a grid.
     ///
     /// ### Example