Sometimes after starting a project and opening the S/R filed, there is no option checked.
This means that you enter the search text, press Ctrl-Enter – and nothing happens (nothing is found). As a quite frequent CT user, I know the trick, but wouldn't it be better to:
Sure, I know the search bar works better, but not always.
I've noticed this also happens when filtering to Untranslated (and maybe other filters).