Fix double scrollbar on small height screens

src/App.css

@@ -53,6 +53,10 @@
   gap: 1rem;
 }
 
+.modal > .MuiPopover-paper {
+  overflow: hidden;
+}
+
 .picker-search {
   margin: 0.5rem;
 }

src/components/Picker.jsx

@@ -56,6 +56,7 @@ export default function Picker({ setCharacter }) {
           vertical: "bottom",
           horizontal: "left",
         }}
+        className="modal"
       >
         <div className="picker-search">
           <TextField