fix: Speed up drawing of Tasks blocks after 2.0.0 release (#1801)

* Revert "fix: render in canvas (#1733)"

This reverts commit d7593a2.

Fixes #1800, but reopens #1732

* docs: Document limitations with Canvas cards.

docs/getting-started/index.md

@@ -149,6 +149,22 @@ Completing a task by clicking its checkbox from a `tasks` query block _will_ wor
 Warning
 {: .label .label-yellow}
 
+Tasks cannot read tasks that are in **Obsidian Canvas cards**.
+
+---
+
+Warning
+{: .label .label-yellow}
+
+Tasks does not display Tasks query blocks that are in **Obsidian Canvas cards**.
+
+We are tracking this in [issue #1732](https://github.com/obsidian-tasks-group/obsidian-tasks/issues/1732).
+
+---
+
+Warning
+{: .label .label-yellow}
+
 Tasks cannot read tasks that are **inside code blocks**, such as the ones used by the **Admonitions plugin**. Use Obsidian's built-in callouts instead.
 
 ---

src/QueryRenderer.ts

@@ -25,18 +25,15 @@ export class QueryRenderer {
     public addQueryRenderChild = this._addQueryRenderChild.bind(this);
 
     private async _addQueryRenderChild(source: string, element: HTMLElement, context: MarkdownPostProcessorContext) {
-        const child = new QueryRenderChild({
-            app: this.app,
-            events: this.events,
-            container: element,
-            source,
-            filePath: context.sourcePath,
-        });
-
-        context.addChild(child);
-
-        child.load();
-        child.onload();
+        context.addChild(
+            new QueryRenderChild({
+                app: this.app,
+                events: this.events,
+                container: element,
+                source,
+                filePath: context.sourcePath,
+            }),
+        );
     }
 }