Hello GNU/Val, thank you for the review.
Indeed, now the version is available by hovering on the magnifying glass icon, and also on the toolbar icon, so it is superflouous in the sidebar title, your comment is good. I will remove it in 2.0.65 to make that shorter.
Internationalization is tracked through an issue on GitHub -> https://github.com/aaFn/Bookmark-search-plus-2/issues/62
I didn't start for now, still acting on functions.
Thank you, aaFn.
------------- Update ---------------
The version is removed from the extension name on the sidebar, as of 2.0.65. Thanks, aaFn.