When keeping the message list page open for long time, the edit token can expire.
I understood that the mw.api.edit module should automatically try to refresh the token if this is the case, but it is not happening.
The message is marked as "Unsaved", and if you open it, there is warning: "Unable to save message: Invalid token".
The only way out of this is to copy the translation to clipboard and refresh the page and do it again.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=41466
https://bugzilla.wikimedia.org/show_bug.cgi?id=48775
https://bugzilla.wikimedia.org/show_bug.cgi?id=9749