PR opened: https://github.com/wikimedia/wikipedia-preview/pull/149

The PR is merged

I'm not sure this is a bug or a limitation of the sentence being in a LTR language shown as RTL.
This sentence is cut differently on RTL, starting from the end of the sentence instead of the beginning.

Is this ok or fixable?

RTL	LTR

It's fixable and I think it should look like this

@eamedina

Yes good catch @Jpita, could you test this follow up PR?

https://github.com/wikimedia/wikipedia-preview/pull/150

I think I found another edge case, is that what's supposed to show or the description text?

commons	preview	commons url	test article
		https://commons.m.wikimedia.org/w/index.php?curid=35434198	articles/arabic.html

I'd say this is a possible candidate for a new ticket where we could revisit how we source the image caption, but likely out of scope for this RTL/LTR ticket. Currently the code attempts to grab the caption from a couple of places, the caption landing in that image for example is from this api call:

https://ar.wikipedia.org/w/api.php?format=json&formatversion=2&origin=*&action=query&prop=imageinfo&iiextmetadatafilter=License|LicenseShortName|ImageDescription|Artist&iiextmetadatalanguage=ar&iiextmetadatamultilang=1&iiurlwidth=320&iiurlheight=568&iiprop=url|extmetadata&titles=%D9%85%D9%84%D9%81:Mosque_of_Amr_ibn_al-As.jpg

https://phabricator.wikimedia.org/T292363