1876770 - Headerpane is missing if Pref mailnews.headers.showUserAgent is enabled

Status: RESOLVED FIXED

(Thunderbird :: Message Reader UI, defect)

Description

[Alfred Peters [:infofrommozilla]]

If mailnews.headers.showUserAgent is set to TRUE the complete Haderpane isn't shown.

Error console:

Uncaught (in promise) TypeError: can't access property "hidden", entry is undefined
    initializeHeaderViewTables chrome://messenger/content/msgHdrView.js:349
    OnLoadMsgHeaderPane chrome://messenger/content/msgHdrView.js:406
    <anonymous> chrome://messenger/content/aboutMessage.js:88
    EventListener.handleEvent* chrome://messenger/content/aboutMessage.js:80

msgHdrView.js:347 -351

 if (Services.prefs.getBoolPref("mailnews.headers.showUserAgent")) {
    const entry = gExpandedHeaderList.find(h => h.name == "user-agent");
    entry.hidden = false;
    gExpandedHeaderView[entry.name] = new MsgHeaderEntry("expanded", entry);
  }

gExpandedHeaderList actually has no entry for "user-agent". Therefore entry is undefined.

Comment 1

[Magnus Melin [:mkmelin]]

Attachment: Bug 1876770 - Make mailnews.headers.showUserAgent work again. r=infofrommozilla

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/9c6d2e7820fe
Make mailnews.headers.showUserAgent work again. r=infofrommozilla