Workaround: Clicking one of the tabs shows the content.

Uhm. I see. At the moment I cannot reproduce with the upstream code of Phorge so I wonder if this is just something related to Wikimedia Phorge.

I see that downstream is not completely up to date with the stable branch of Phorge. For example this patch is missing at least AFAIK: https://we.phorge.it/D25308 but that seems to me an un-relevant change.

I'm not able to reproduce this problem locally with upstream Phorge at https://we.phorge.it/source/phorge

But, even more interestingly, I've done a checkout of the branch wmf/stable from https://gitlab.wikimedia.org/repos/phabricator/phabricator/-/tree/wmf/stable

And I get the same result. It seems to work in both cases. Same screenshot:

Maybe @Dylsss would like to give an eye on this

Don't tell anyone that I would like to put this in production and collect its logs when visiting with ?asd=1

diff --git a/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php b/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php
index 831229bab1..0598057419 100644
--- a/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php
+++ b/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php
@@ -112,6 +112,11 @@ final class PhabricatorDashboardTabsPanelType
       }

       $is_selected = (string)$idx === (string)$selected;
+      if(isset($_GET['asd'])) {
+        phlog("Tab view $name");
+        phlog($idx);
+        phlog($selected);
+      }

       $tab_view = id(new PHUIListItemView())
         ->setHref('#')
@@ -283,6 +288,11 @@ final class PhabricatorDashboardTabsPanelType
       }

       $is_selected = (string)$idx === (string)$selected;
+      if(isset($_GET['asd'])) {
+        phlog("Panel entry $panel_id");
+        phlog($idx);
+        phlog($selected);
+      }

       $content_id = celerity_generate_unique_node_id();

Unsure if this should be a Sub-task of the migration (even if the parent is resolved) or just a mention. Feel free to disconnect.

I've examined 100+ Wikimedia Dashboards and... I also cannot reproduce here in production ._.

For example, this super-nice Dashboard from the SRE team has so many tab panels and it works perfectly:

https://phabricator.wikimedia.org/dashboard/view/653/

I wouldn't be surprised if the workaround is: re-create the Dashboard.

OK interesting, I've limited the scope to just W6

Since I'm totally not a virus but I'm a dolphin, maybe a lovely person may want to bless the user @valerio.bozzolan to be allowed to edit W6 (I say edit, but I mean inspect with my big eyes, without saving anything)