Documentation in activity explorer

Hello all,
I’m trying to use the documentation sheet but what happens is that immediately after my first character type, the cursor gets position 1.
This happens on direct edition from the activity explorer layer or from editor.
Is there any reason for this?
Is there something to do to avoid?
Thanks for any response.
Thierry

Same problem as your previous post?

Aïe! Sorry for repetition then…
I have been mistaken by the kind of search tool that should prevent it.
Regards