Indicator applet makes screen unresponsive after unlock on Ubuntu 18.04.1

[jblievremont]

Hello,

Since my upgrade to Ubuntu Bionic Beaver 18.04.1 LTS, I had a few seconds of Gnome Shell unresponsiveness after each screen unlock. The issue completely disappeared after I closed the emojione-picker indicator.

I get similar symptoms (unresponsive shell) when I start the picker from a terminal: the indicator icon takes about 1 second to appear, then the display hangs for a few more seconds after appearance of the indicator icon - and it is even longer when I start the Python script from the freshly cloned source.

I tried to perf-trace the __main__ block, but the unresponsiveness only kicks in after the call to Gtk.main(), so my take is that GTK struggles to pre-render the menu (too many widgets?).

Versions:

• uname -a: Linux jean-baptiste-ubuntu 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
• lsb_release -a: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.1 LTS Release: 18.04 Codename: bionic
• gnome-shell: 3.28.3-0ubuntu0.18.04.2
• emojione-picker: 0.1~git20160614 (from PPA)