Images cannot float in EPUB rendering

[Thanatermesis]

When trying to align an image with text is not possible, I have tried all the possible options without success
Example code:

== Test section
.Title for image
image::einstein-relatividad.jpg[,340,role="related thumb left"]
Lorem Ipsum is simply dummy text of the printing a.....

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So the HTML rendering (asciidoctor) renders very good, like:

HTML:

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But for PDF or for EPUB3, it always renders it in a strange and unfriendly way (I tried different options for the images, nothing found to work nicely yet):

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Epub:

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PDF:

[mojavelinux]

Can you please repost your entire report here?

[Thanatermesis]

done

[mojavelinux]

My advice here would be to go ahead and add the same styles that are present in the default stylesheet. The reason I didn't add them originally is because many ePUB readers won't honor them. But that's really up to the writer to decide whether to use layouts that are only supported in a handful of ePUB readers. Caveat emptor.

[Thanatermesis]

So what would happen in the case an epub reader (let's say "kindle") cannot read this style? it just switches to the default mode ? (first image, then text) or it directly don't show it? so if fallbacks to a different styling i don't see the problem

[mojavelinux]

It would just ignore the request to float the image and display it as it currently appears.