clock applet in XFCE panel no longer autorotates

[gratefulfrog]

In XFCE, I display the panels vertically to save on screen space.

Until last week , the digital clock displayed vertically as well, but since that time, the clock displays horizontally, thus only showing 3 characters of the time and date.

When I hover the mouse over the clock applet, it then displays vertically and is readable.

There seems to be no parameter to set the applet display orientation.

This is a regression due to a very recent update.

Thanks for your help!
Ciao,
Bob

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xfce4-panel 4.12.0-3ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: XFCE
Date: Tue Jul 19 08:42:17 2016
InstallationDate: Installed on 2015-05-11 (434 days ago)
InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
SourcePackage: xfce4-panel
UpgradeStatus: Upgraded to xenial on 2016-06-17 (31 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Theo Linkspfeifer (lastonestanding)]

The bug was not present after updating to 16.04? Neither xfce4-panel nor the pre-installed GTK themes have received an update after the final release.

Are you still affected by this issue?

[Launchpad Janitor (janitor)]

[Expired for xfce4-panel (Ubuntu) because there has been no activity for 60 days.]