Error Capturing Caveats (#3141)

* Update options-lifecycle.md

Error capturing caveats. See [issue](vuejs/core#12575 (comment)).

* Update src/api/options-lifecycle.md

---------

Co-authored-by: Natalia Tepluhina <[email protected]>

Author: 2 people

src/api/options-lifecycle.md

@@ -215,6 +215,12 @@ Called when an error propagating from a descendant component has been captured.
 
   - An `errorCaptured` hook can return `false` to prevent the error from propagating further. This is essentially saying "this error has been handled and should be ignored." It will prevent any additional `errorCaptured` hooks or `app.config.errorHandler` from being invoked for this error.
 
+  **Error Capturing Caveats**
+  
+  - In components with async `setup()` function (with top-level `await`) Vue **will always** try to render component template, even if `setup()` throwed error. This will likely cause more errors because during render component's template might try to access non-existing properties of failed `setup()` context. When capturing errors in such components, be ready to handle errors from both failed async `setup()` (they will always come first) and failed render process.
+
+  - <sup class="vt-badge" data-text="SSR only"></sup> Replacing errored child component in parent component deep inside `<Suspense>` will cause hydration mismatches in SSR. Instead, try to separate logic that can possibly throw from child `setup()` into separate function and execute it in the parent component's `setup()`, where you can safely `try/catch` the execution process and make replacement if needed before rendering the actual child component.
+
 ## renderTracked <sup class="vt-badge dev-only" /> {#rendertracked}
 
 Called when a reactive dependency has been tracked by the component's render effect.