Here, when editing a Commons image, a <P> will be rendered after the first line, but not the second or third:

== {{int:filedesc}} ==
{{Information
|description={{en|1=Here the Sun is seen covering much more of the sky than usual at sunrise,
almost like a nuclear explosion, due to [[w:ice clouds|ice clouds]]. Zao Keng, Dongshi
District, Taichung City, (central) Taiwan.

I.e., "...at sunrise, <P> almost like..."

Please, have each part of the template do a separate job.

Don't have hidden rendering operations treat seemingly uniform blocks differently.

If the first line is secretly special, then have it as a separate parameter.

Users assume they are using wikitext, which needs a blank line, or explicit <P>, to do this. But now that it is done, there is no way to undo it, other than squeeze it all one one line... Which is not needed for the other lines. I.e., what a mess.