SeaMonkey Internet Suite

Unofficial News in English language


SeaMonkey 2.53.1 Beta 1

Has been released.

I can recommend that version, I have been using 2.53 for a long time without bigger problems. But you should keep in mind that there will be no way back for your existing User Profile after you will have used it with 2.53.1.

Additionally to the official Release Notes here you find some more information concerning changes with SeaMonkey 2.53.1

You need a Bugzilla-Account for the queries here in the blogpost. All queries without any liability, because (not only) correct use of TARGET MILESTONE is controversial.

Mistakes in official Release Notes

I don’t know.

New features

I do not know which Firefox56 – features made it into  SeaMonkey 2.53.1


  • Bugs in SeaMonkey  what have been fixed for SeaMonkey 2.53

Known issues:

See official release notes and this query.

Possible new bugs (“Regressions“)

You can find workarounds for new problems in the Wiki

Download from here!


Thanks to all who contributed to the project and helped to make possible this release!




1 Comment

PDF Viewer PDF.JS for SeaMonkey 2.53.1

PDF Viewer for SeaMonkey 2.1.288 does not work correctly with SeaMonkey 2.53 and 2.53.1 (By WG9S): endless idling in Browser-TAB until you click Stop Loading Icon, also problems when open PDF attachment from Mail.

There is a first experimental fixed version (by FRG) here, you can use it for tests on your own risk. Loading PDFs in browser window now works fine, loading PDF attachment from email still needs a refresh (browser tab contents) before PDF becomes shown.

More details and discussion on German Blog.


Add-on “Go Parent Folder” stopped working

As already mentioned in Unofficial SeaMonkey 2.53 by user wg9s and Test Results for Add-Ons from ca-archive, “Go Parent Folder” (and also “Show Parent Folder”) don’t work any longer with latest 2.53 by user wg9s

  • “Go Parent Folder” context menu appearing after rightclick on a bookmarks entry does no longer show  the Item “Go Parent Folder”, Problem is visible in Bookmarks Manager and in Sidebar Bookmarks Panel.
  • “Show Parent Folder”: Table column can no longer be added in Bookmars Manager.

Screenshot from Build 20170731233559

Go Parent Folder and Show Parent Folder both worked in Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0 SeaMonkey/2.53a1 Build 20170731233559. That was a version with the little column selector in the most right table heading in Bookmarks Manager.

The first version still available on my PC where both addons do no longer work is Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0 SeaMonkey/2.53 Build 20180902143701. And in this version also the little column selector in the most right table heading has gone. That proves nothing, but might indicate the reason why the addons do no lnger work.