Search for words embedded in ``` preformatted text blocks in issues does not work

I have Gitlab issues where there are code blocks (preformatted text) enclosed with triple backquotes (that is, ```).

It seems that searching for a word contained in these blocks yields no results. More specifically, I am searching for launchTask, and preformatted text blocks contain "launchTask": "value"

When doing a global search through http://gitlabhost/search, search does not work either.

Do I (absolutely) have to enable elasticsearch to search for simple words like that within preformatted text blocks?