(In reply to Philippe Verdy from comment #3)
> What is happening to **inline** images (sometimes used to replace some text
> which is hard to render, such as letters with stacked diacritics rarely
> supported in fonts, where the word is instead rendered using an SVG image,
> or small icons, when they are not inserted by using a custom template?

Nothing. This bug is only about block images, as it says.

> OK there's a problem with inline images because they cannot be easily
> dimensionned according to the current font size and positioned according to
> the line-height and specific baseline of some scripts, and they cannot match
> other font styles. But they are still needed in some cases because it is not
> possible to build custom fonts in pages without support of page-level CSS,
> or scoped CSS (it is impossible with inline CSS in element style attributes
> that don't have selectors).
> 
> ----
> 
> Note that it should be possible to rescale an inline SVG image to fit in the
> 1.6em line-height using CSS "max-height:1.6em" in the <img> HTML element,
> but MediaWiki still does not support setting any "style=" attribute in
> [[File:name]] or [[Image:name]].
> 
> You can see the effect of client-side image rescaling in the Mobile view of
> our wikis: it uses "max-width:100% !important" (in addition to other really
> dirty quirks such as changing the "box-model:" of almost all elements to
> "border-box" inherited from old "IE quirks mode", rather than the standard
> "content-box", breaking lots of layouts, even though the mobile view has
> never been meant to be used with old version of IE; but meant to be used
> with standard HTML! Someone shoud rework the Mobile view to remove this
> dirty quirk that breaks lots of layouts as it applies to ALL spans and
> blocks, forcing many templates to manually set the "content-box:content-box"
> everywhere and dewikifying lists with ol/ul + li or dl + dt/dd...).
> 
> With the support client-side image rescaling (support of "max-height:" style
> in wiki-images), inline images are safe in the middle of a paragraph (for
> now they are supported provided that template specify small heights, below
> 20px).


This feels like a MediaWiki bug ("Please let me size text-inline images to automatically be line-height") – do you want to create one?