Riot v4 inserts the elements not in <slot />

[Qs-F]

Help us to manage our issues by answering the following:

1. Describe your issue:

With Riot v4, the elements which exists in pre-mounted tag in caller file (like index.html) is inserted into riot tag not the place in exists.

For example, if <my-tag><h1>hello</h1></my-tag> is in index.html and <my-tag><div><slot /></div></my-tag> is in my-tag.riot, the outcome will be <my-tag><h1>hello</h1><div></div></my-tag>. I expect the result like <my-tag><div><h1>hello</h1></div></my-tag>.

I think this is a bug cuz with Riot v3 I could not see such a behavior.

2. Can you reproduce the issue?

Yes.

Riot v4 example
Riot v3 comparison

3. On which browser/OS does the issue appear?

Chrome/Mac

4. Which version of Riot does it affect?

4.6.5

5. How would you tag this issue?

• Question
• Bug
• Discussion
• Feature request
• Tip
• Enhancement
• Performance

[Qs-F]

Same as #2772 .