I use Thunderbird as my news reader.
Many updates ago the ability to configure the order of the news toolbar (follow-up, reply, archive etc) was removed BUT a third party add_on plug-in added the functionality back.
I added "Message Header Toolbar Customize" which has since been updated to the latest version.
The most recent Thunderbird update has changed the behaviour yet again! There is no longer any text associated with the buttons - just a series of blank squares. A Mouse-over will reveal the function of the button and "Message Header Toolbar Customize" will still allow the order to be changed and allow the display of miniature icons but even though text is an option in the plug-in no text is displayed.
Does anyone know the work around to get text on the buttons to be displayed again?