Indicator Plugin shows text(useless to end user) when there's no icon to show

Submitted by Junaid Ahmed

Assigned to Andrzej

Link to original bug (#14389)

Description

Created attachment 7720 Xfce Indicator Plugin settings 1. Rightmost envelope is from indicator plugin

I have added Mail Watcher(xfce4-mailwatch-plugin) plugin to the panel which sits there, scans for new mail every 10 minutes, shows notification on new mail arrival and launch my desired mail client (Though I've to admit setting it up properly requires a bit pre-acquired knowledge and effort, so not new-user friendly).
So, as I've already got this working mail notifier+launcher(xfce4-mailwatch-plugin) on my panel, I don't need another big confusing envelope icon from Mail Reader which is just a launcher for the default mail client.

The Mail Reader (exo-open --launch MailReader %u) is an integral part of the desktop environment and removing it also removes the whole desktop and the file manager. It shows it's icon using xfce4-indicator-plugin and there is an option to hide this(or any) icon in Indicator Plugin settings. But when I select the hide option and reboot, the Mail Reader icon disappears but a large space occupying, useless text "No indicator icon" appears on the panel. Which actually hampers the main usefulness of icon hiding feature. Please change this.

OS: Ubuntu 18.04 DE: Xfce 4.12(Xubuntu) Related package: xfce4-indicator-plugin 2.3.4-0ubuntu1

Proposed fix: When user hides all icons from Indicator Plugin, no text should appear on it's place on the panel.

Attachment 7720, "Xfce Indicator Plugin settings 1. Rightmost envelope is from indicator plugin":

Version: 2.3.4