Bug description

I have a parent div with up-hungry. When clicking a button, I call await up-render() with a target of the nested element. The resulting response object has an empty response.fragments array. In unpoly 3.3.0 and earlier, the response.fragments array was populated.

I bisected the problem to this commit:

cc5a31f

Reproduction project

https://glitch.com/edit/#!/honeysuckle-vast-bead

In the repro, you can change the script version. I expect both buttons to be replaced with the string replacement, while an alert demonstrates an empty fragment response. Note that the difference between child-1 and child-2 is up-hungry.

Steps to reproduce the behavior:

1. Go to reproduction project linked above
2. Click the child buttons
3. Success is no alerts

Expected behavior

Button should be replaced with the string replacement-1

Browser version

• OS: linux
• Browser brave and firefox
• Version latest

Additional context