We'll create fresh WordPress site with Atr Inline Rtl Ltr installed. You have 20 minutes to test the plugin after that site we'll be deleted.
Block editor toolbar addition for mixed Rtl Ltr writing directions. It wrap words (or sentences) in paragraph block with span element and change their direction from rtl->ltr or ltr->rtl as you need.
Uses dir=”rtl” or dir=”ltr”. See also Inline bidi markup at www.w3.org
Note that the wrapping element is < span dir=”rtl” || dir=”ltr” class=”atr-inline-direction-rtl” || class=”atr-inline-direction-ltr” > so you can control it through your site CSS as well. i.e. .atr-inline-direction-rtl{direction: rtl;display:inline-block}