Add missing case for updating touch controls UI mode

src/ui/ui.ts

@@ -331,6 +331,9 @@ export default class UI extends Phaser.GameObjects.Container {
       const doRevertMode = () => {
         this.getHandler().clear();
         this.mode = this.modeChain.pop();
+        const touchControls = document.getElementById('touchControls');
+        if (touchControls)
+          touchControls.dataset.uiMode = Mode[this.mode];
       };
 
       if (noTransitionModes.indexOf(lastMode) === -1) {