Problem global search in all folders

[croulibri]

Thunderbird 60 / Windows 7 / Extension vers. 1.3.

If I type "to:oliver" in quick search so I have all mail sent to oliver that are in the Inbox folder. That is fine.
If then I type Shift+Enter, then global search to all folder is triggered but the search is then made with the expression "oliver"
This search return all Email with oliver in "to", "from", "subject" and "message pane". But I was expecting a search in all folder of mails sent to Oliver.

Have I missed something about how to make a global search (all folder of my mail box) of mails sent to Oliver ?