Remove invisibly small elements on scene load (#754)

src/scene/data.ts

@@ -11,7 +11,11 @@ import { ExportType } from "./types";
 import { exportToCanvas, exportToSvg } from "./export";
 import nanoid from "nanoid";
 import { fileOpen, fileSave } from "browser-nativefs";
-import { getCommonBounds, normalizeDimensions } from "../element";
+import {
+  getCommonBounds,
+  normalizeDimensions,
+  isInvisiblySmallElement,
+} from "../element";
 
 import { Point } from "roughjs/bin/geometry";
 import { t } from "../i18n";
@@ -334,7 +338,9 @@ function restore(
   savedState: AppState | null,
   opts?: { scrollToContent: boolean },
 ): DataState {
-  const elements = savedElements.map(element => {
+  const elements = savedElements
+    .filter(el => !isInvisiblySmallElement(el))
+    .map(element => {
       let points: Point[] = [];
       if (element.type === "arrow") {
         if (Array.isArray(element.points)) {