hono: Sub-Instances of Hono don't trigger onError

Hi! I’m currently restructuring my project’s routes to use multiple sub-instances for their respective category. Hono supports grouping multiple instances with hono.route(), though it seems like it’s not possible to define a custom error handler for a sub-instance.

Here is my example code:

import { Hono } from "hono";
import { serve } from "https://deno.land/std/http/server.ts";

const hono = new Hono();

const route = new Hono();

route.onError((err, ctx) => {
  return ctx.text("Caught error!", 500);
});

route.get("/", (ctx) => {
  throw new Error("Unhandled Error.");
});

hono.route("/", route);

serve(hono.fetch, { port: 3000 });

The endpoint /, defined by route, will throw an Error. The instance route should catch and handle errors, because of route.onError(...).
Though when hitting the endpoint /, the thrown error gets printed to the console and the API returns 500 - Internal Server Error.

Trace: Error: Unhandled Error.
    at file:///workspace/src/server.ts:13:9
    at Hono.dispatch (https://deno.land/x/hono@v2.7.5/hono.ts:216:15)
    at Server.fetch (https://deno.land/x/hono@v2.7.5/hono.ts:263:17)
    at Server.#respond (https://deno.land/std@0.174.0/http/server.ts:299:37)
    at Server.#serveHttp (https://deno.land/std@0.174.0/http/server.ts:346:20)
    at Hono.errorHandler (https://deno.land/x/hono@v2.7.5/hono.ts:111:13)
    at Hono.handleError (https://deno.land/x/hono@v2.7.5/hono.ts:191:19)
    at Hono.dispatch (https://deno.land/x/hono@v2.7.5/hono.ts:219:21)
    at Server.fetch (https://deno.land/x/hono@v2.7.5/hono.ts:263:17)
    at Server.#respond (https://deno.land/std@0.174.0/http/server.ts:299:37)
    at Server.#serveHttp (https://deno.land/std@0.174.0/http/server.ts:346:20)

This looks like a bug to me. I appreciate any help!