I need some advice on some weird rendering breaks I'm getting in native Sony Xperia email client:

The background colour is half as wide as each container table (?!?)

Has anyone else seen this before? If so, what's the best solution to fix?

What's confusing is that Samsung native email client renders beautifully, on a par with native iOS mail app.

I thought Android and its native apps were reskinned to suit the manufacturer's device, but essentially functioned in the same way. Obviously not...