When trying to add my signature on meta to endorse a project, I noticed that the signature button is grayed out in VE, so I couldn't add it. I had to switch to wikitext.
Please enable the signature button because it is useful to endorse projects or add support.
The signature button is only enabled on namespaces marked as "wantSignatures" in MWNamespace.php. This is the same behaviour as WikiEditor. Extra namespaces can be added per-wiki through the $wgExtraSignatureNamespaces config, so if you think one has been missed you can request a specific namespace be added on a specific wiki (see for example T133978 or T195588)
Hello @Micru
Even if the requested configuration does not represent a major change, please start discussion somewhere on-wiki to get a consensus.
See https://meta.wikimedia.org/wiki/Requesting_wiki_configuration_changes.
@Micru: This task is not invalid ("when the problem is not a bug, or when it is a change that is outside the power of the component's developers") until there are specific reasons provided.
User is disabled and anyone else is unlikely to provide a community consensus link. Closing as invalid, then.