diff --git a/src/dat/controllers/NumberControllerBox.js b/src/dat/controllers/NumberControllerBox.js
index 462ebf2..940c20e 100644
--- a/src/dat/controllers/NumberControllerBox.js
+++ b/src/dat/controllers/NumberControllerBox.js
@@ -108,6 +108,10 @@ class NumberControllerBox extends NumberController {
   }
 
   updateDisplay() {
+    if(this.__input === document.activeElement) {
+      return;
+    }
+
     this.__input.value = this.__truncationSuspended ? this.getValue() : roundToDecimal(this.getValue(), this.__precision);
     return super.updateDisplay();
   }
diff --git a/src/dat/controllers/NumberControllerSlider.js b/src/dat/controllers/NumberControllerSlider.js
index f75bc0e..67b3cf1 100644
--- a/src/dat/controllers/NumberControllerSlider.js
+++ b/src/dat/controllers/NumberControllerSlider.js
@@ -109,6 +109,9 @@ class NumberControllerSlider extends NumberController {
   }
 
   updateDisplay() {
+    if(this.__input === document.activeElement) {
+        return;
+    }
     const pct = (this.getValue() - this.__min) / (this.__max - this.__min);
     this.__foreground.style.width = pct * 100 + '%';
     return super.updateDisplay();