The RFC is very vague wrt implementation. It basically sais: I suggest merging the best bits of all the alternatives, into a single [gadget/extension/core feature] that can be used at all wikis (WMF and elsewhere).

For the RFC process to work, there would need to be a concrete proposal for implementation, or at least alternatives to discuss. If no concrete proposal is forthcoming, I propose to treat this as a regular tracking bug and remove it from the RFC process.

I've removed this from the RFC list, as having been mostly done already, or at the very least very far underway. Further RFC discussion seems unnecessary to me.

Should we make this bug into a project? Would be much easier for the people who file new bugs to find this (they simply type "live" in the project - at least that's what i did at first). Also would allow us to prioritize which bugs need to be addressed first

In T41272#1275159, @Yurik wrote:

Should we make this bug into a project? Would be much easier for the people who file new bugs to find this (they simply type "live" in the project - at least that's what i did at first). Also would allow us to prioritize which bugs need to be addressed first

CC @Aklapper

In T41272#1275281, @Ricordisamoa wrote:

In T41272#1275159, @Yurik wrote:

Should we make this bug into a project? Would be much easier for the people who file new bugs to find this (they simply type "live" in the project - at least that's what i did at first). Also would allow us to prioritize which bugs need to be addressed first

If this is wanted (is there consensus?), anyone with batch edit permissions can do so:
https://www.mediawiki.org/wiki/Phabricator/Project_management/Tracking_tasks
However for tracking such requests, a dedicated task under Project-Admins is more likely to be found.

I was going to add a bug, but clearly this is just a lack of feature at the moment:

When I use live preview section editing does not list transclusions.

It works fine when I edit anonymously, thus not using live preview, and when I edit whole pages (and occasionally when I've had a page reload, like after an attempted save that failed due to a "loss of session data", but I couldn't get it to work by "forgetting to add an edit summary").

You can see my attempts at determining the problem here: https://en.wikipedia.org/w/index.php?title=User_talk%3AMarkhurd%2FSandbox&type=revision&diff=664666744&oldid=646644087 (when I thought it was working sometimes).

I note T2878 shows this has been a long-running issue and was "in flux" itself (outside of live preview) as late as May 2014.

I removed "WikiEditor" from task description because live preview is mainly a feature of core and not of the extension WikiEditor. The extension WikiEditor has also a feature live preview which uses also the API from core.

WikiEditor's live preview was removed completely in rEWED77cea2697cc4: Drop the never-finished "Labs" publish and preview features.

Please consider remaking this into a project, the table with listed tasks is unreadable right now for me and I would guess many others on similar page widths (1366px).

(there is no possibility to scroll and see the rest of the titles, they are showing up exactly like this, just with ellipses)

@stjn: Feel free to request a project. Thanks!