I'm using Elastic Stack 6.3.1 and while in Monitoring app (via Kibana), if I choose Nodes (under Elasticsearch) and then try to sort by Name (by clicking on it), I see arrow goes up/down, however sort isn't working (I can only sort by Shards).
Also slightly unrelated, but still somewhat relevant... Is there a "mobile theme" version (or something similar) coming to Kibana as Kibana web interface renders very poorly on my Android (9) / Chrome (67) & iOS (11) / Safari?
I apologize for missing the second part of your question. I went through a lot of questions yesterday and sometimes I miss the 2-part questions.
We have a long-running issue to make Kibana functional on mobile devices. It is part of an overall effort to use web standards, which also improve accessibility. It looks like the issue being tracked is here: https://github.com/elastic/kibana/issues/2563
To meet that goal, we've been working on a UI component library designed with accessibility and responsiveness. There is a guide to the library at: https://elastic.github.io/eui/#/
There are no promises when this will be sorted out. It's a large effort that we're taking on little by little. It's moving fast though and you can trust that each new minor release will see significant design improvements.