[Users] How do I search inside message source?

[Dave Howorth]

On Sat, 17 Feb 2018 21:46:36 +0100
"Erik P. Olsen" <epodata at gmail.com> wrote:

> On 2018-02-17 at 18:06:01 Removed GDPR wrote:
> 
> > When I open the message source I can't see an option to search
> > inside the displayed text.  
> 
> Edit -> Find in current message

That doesn't work. Specifically, I opened the source of the message I
am replying to, then selected Edit/Find in current message and searched
for 'score' and got 'Search string not found'. But the word is clearly
there in the headers.