[sp8962]

The whole point of vector tiles is that the rendering is local and controlled by a style configuration (except for the tile schema) that can be changed. So the brokenness you are seeing is either in the style or the library that is rendering the contents locally.

[SSLy]

Indeed, but that is probably not going to help end users of apps.

[sp8962]

Well nobody claimed things are going to get simpler.

It is difficult to beat raster tiles in that respect. vector tiles split up responsibility for what you get visually over multiple moving pieces with different provenance and operators.

[dnpls]

it looks like the selected font doesn't support arabic text, producing the disconnected characters.

[mapmeld]

It's likely an issue with displaying Arabic text in WebGL, since that needs to handle all of the possible options for each letter in the text-shaping.