@ppelberg with T323400 being resolved and verified, I think we can close this one and also move ahead with T321961. I will also resume working on T320997 soon in preparation of that.

@matmarex: It seems to be working now as you described. Maybe I didn't refresh my edit session after I made changes to my preferences.

@ppelberg: Yes, so the issues relevant to fr.wiki were fixed in T316175 and the Subscribe button is now working on bn.wiki. However, since we postponed the deployment of mobile DT a/b test, I think we should re-visit this task once we get closer to the new deployment date.

In T316175#8415717, @ppelberg wrote:

In T316175#8406524, @Ryasmeen wrote:

Tested on fr.wiki, all three issues mentioned above are now fixed. Thanks @DLynch!

Excellent.

There is another issue around this button which I filed separately here: T323400.

Wonderful – thank you, @Ryasmeen.

Resulting question: does you stating the above mean this ticket can now be closed?

@matmarex: This page still has the "Learn more about this page" button: https://en.m.wikipedia.beta.wmflabs.org/wiki/Talk:No_lede_content

Tested on fr.wiki, all three issues mentioned above are now fixed. Thanks @DLynch!
There is another issue around this button which I filed separately here: T323400.

ar.wiki: Everything is working as expected.
bn.wiki: The Subscribe button is not working on bn.wiki, was testing on this page.
fr.wiki: There were couple of issues found on fr.wiki but those are all relevant to the change that is done in T316175. So, those issues are going to be tracked on that ticket instead.

Issues found so far:

The interface looks good to me. However, there are some issues with the way it behaves for the special case: when a talk page has a lede section that contains Reply buttons as @matmarex mentioned below:

In T259092#8257809, @matmarex wrote:

I assume from the tags that you confirmed this recently, so we should close the task?

In T302014#7742801, @matmarex wrote:

There are also some edge cases where this will result in a slightly weird behavior:

• If there are multiple comments posted within one minute, we'll always highlight all of them
• If the user marks some of the bundled comments as read, we'll still highlight them when following the bundled link
• If the user replied on the page without marking their notifications for that page as read, we will highlight their own comment

But overall, it seems better than before.

@ppelberg: That is correct, scenario 2 is about the case where it impacts people who are attempting to log in with a different existing account, not a new one.

In T317035#8212122, @Esanders wrote:

2. Make an edit on that page.

Presumably this only happens with the 2017WTE?

In T313699#8149464, @ppelberg wrote:

@Ryasmeen can you please document the input modes people see when opening the New Topic Tool? More context in the task description's ===Testing instructions section.

This is still reproducible on this page on Beta cluster: https://en.wikipedia.beta.wmflabs.org/wiki/User_talk:Rechecker/sandbox