diff --git a/src/modules/hub_settings.js b/src/modules/hub_settings.js
index a25b793a..770c9449 100644
--- a/src/modules/hub_settings.js
+++ b/src/modules/hub_settings.js
@@ -134,6 +134,7 @@ module.exports = {
 
 			board_drawer.width = null;				// Force it to rebuild.
 			this.draw();
+			comment_drawer.textarea.blur();			// In case it's been pushed offscreen (the rebuild can slightly change the board's width).
 			break;
 
 		case "thumbnail_square_size":