[xExtension-YouTube] content replacement broken

[intriguedlife]

Extension xExtension-YouTube attempts to replace the content of an entry.
This does not seem to work as the original content of an entry is always appended after the content that the extension has created.

Numbers as shown in screenshots below:

1. content generated by extension
2. original content
3. html tags of content

With extension option "Display the feeds content" disabled:

With extension option "Display the feeds content" enabled:

[Alkarex]

Maybe similar to FreshRSS/FreshRSS#7240 (comment)