After installing the latest MAC operating system update 10.9.5, you are unable to type in any program (Design Manager) using Citrix. The keyboard appears to no longer work.
Citrix Workspace & macOS Catalina 10.15.3 - You have not chosen to trust AlphaSSL issue of server secuity certificate. Asked by David Hawley, April 16 0 votes. Sep 19, 2014 I use Citrix Receiver to connect to my office systems when I work from home. The office systems are Windows 7 based and I work at home on a Imac. Up to yesterday everything worked like a dream. Then I upgraded from OSX 10.9.4 to 10.9.5 and sine then my keyboard has stooped responding when I am connected to my office system. Receiver 12.9 for Mac product software. High performance web and self-services access to virtual apps and desktops.
This latest MAC update has an issue with the keyboard focus. To fix this, you will need to switch the keyboard focus to the OSX Desktop and then back to the Citrix Viewer/Receiver.
To change the focus to the OSX desktop:
Press the CMD + TAB buttons on the keyboard at the same time.
Then, using your mouse, click on the active Citrix Viewer in the dock.
You should now be able to type again in your Citrix program (Design Manager).
Below is the link to the online forum where the resolution was found here.