I understood what you mean I just put the screenshot to show you the "everywhere" option I mentioned before. But I still couldn't get why "everywhere" doesn't search in everywhere It must be enough according to me to search whole document because I don't know what "wrap search" mean...

I was not able to find better name for explaining that all text styles are evaluated and nobody has complain

Naming it
All Styles or
Whole document will also lead to confusion.
But, I hope, you got that you need to set "Wrap Search" flag

Also I will enable it by default (but only for fresh installation).
I am using Turkish layout already. That key combination was taken on Turkish layout. I also tried in English layout too. That key gives Ctrl + \ this time and it still doesn't work. I tried to assign several different keys too but none have worked yet. They were working before, I don't know why not now.
Hmm... I have done the test with Ctrl + < and it is working. If language active when creating shortcut equal to one which is active when I call template in document (in my case it was done with German). I can ask you to send me your configuration files, but think this would not help. Only thing I can suggest is to do the same carefully assign it and then use with same language. Or just do not use such shortcuts, which changes between languages
I also find another bug I think and this is important. I uninstalled the editor and reinstalled it but this time for all users. I launched the app after install by checking box in the installer I did some changes on settings "like remember last open directory" and then I close and re-open it everything was ok and made some other changes too. Next time I open the editor I realized that my last changes that I did on second use were gone. I did change that settings and but they are not saved anymore. The changes after the first time used not saved on computer. Then I uninstalled it and re-installed just for current user and everything was ok...
So, general message from here: settings are not saved when HE installed for All Users (maybe once permission problem). Which OS you use and do you have admin rights?
But I will also test this.