Fixes zenorocha#320

Author: zenorocha

src/clipboard-action.js

@@ -63,7 +63,10 @@ class ClipboardAction {
         this.fakeElem.style.position = 'absolute';
         this.fakeElem.style[ isRTL ? 'right' : 'left' ] = '-9999px';
         // Move element to the same position vertically
-        this.fakeElem.style.top = (window.pageYOffset || document.documentElement.scrollTop) + 'px';
+        let yPosition = window.pageYOffset || document.documentElement.scrollTop;
+        this.fakeElem.addEventListener('focus', window.scrollTo(0, yPosition));
+        this.fakeElem.style.top = yPosition + 'px';
+
         this.fakeElem.setAttribute('readonly', '');
         this.fakeElem.value = this.text;