Merge pull request #798 from savetheclocktower/fix-half-screen-bug-we…

…-think

Prevent “half screen” bug by resetting scroll position when editor regains focus

src/text-editor-component.js

@@ -1689,6 +1689,13 @@ module.exports = class TextEditorComponent {
   }
 
   didFocusHiddenInput() {
+    // Focusing the hidden input when it is off-screen causes the browser to
+    // scroll it into view. Since we use synthetic scrolling this behavior
+    // causes all the lines to disappear so we counteract it by always setting
+    // the scroll position to 0.
+    this.refs.scrollContainer.scrollTop = 0;
+    this.refs.scrollContainer.scrollLeft = 0;
+
     if (!this.focused) {
       this.focused = true;
       this.startCursorBlinking();