diff --git a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/PlaygroundPage/PlaygroundSettings/FunctionDrawer.tsx b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/PlaygroundPage/PlaygroundSettings/FunctionDrawer.tsx
index d9b817ef886..c01e3824546 100644
--- a/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/PlaygroundPage/PlaygroundSettings/FunctionDrawer.tsx
+++ b/weave-js/src/components/PagePanelComponents/Home/Browse3/pages/PlaygroundPage/PlaygroundSettings/FunctionDrawer.tsx
@@ -129,11 +129,9 @@ export const FunctionDrawer: React.FC<FunctionDrawerProps> = ({
           <StyledTextArea
             value={functionJSON}
             placeholder={FUNCTION_PLACEHOLDER}
-            className="h-full"
-            style={{
-              height: '100%',
-            }}
+            startHeight="100%"
             onChange={e => setFunctionJSON(e.target.value)}
+            className="!resize-none"
           />
           {jsonValidationError && functionJSON.length > 0 && (
             <Alert severity="warning">