I was having with issue citrix receiver dual monitor issues while connecting remotely to a pc . Citrix receiver was detecting multiple monitors as one. It was not detecting multiple monitors. I found a fix for it while playing with Citrix receiver settings. It worked for me so I am sharing this to see if it works for other users who are facing similar issues.
After installing Citrix XenApp/XenDesktop roles such as StoreFront, Delivery Controller, VDA on servers, the setup installation adds several new performance counters that you can access and use via Performance Monitor. Some of the counters will be specific to the role you install so the counters available to each machine will vary. Goliath Performance Monitor is the only comprehensive Citrix monitoring and troubleshooting solution that brings together Citrix monitoring data, end user experience performance metrics and the supporting IT elements that can impact end users experience when using Citrix. Open the Citrix Receiver Group Policy Object administrative template by running gpedit.msc. Under the Computer Configuration node, go to Administrative Templates Citrix Components Citrix Receiver DPI Select High DPI policy. Change the settings as required. Citrix Receiver: DPI Settings Applies to Windows systems with Citrix Receiver 4.10 and later This fix was released to address an issue with high resolution displays and issues with Windows display resolution scaling. When boosting text.
Citrix Receiver Monitoring Service
At first, upgrade your Citrix Receiver to the latest version by downloading and installing it from https://www.citrix.com/downloads/citrix-receiver/windows/
Current version of citrix receiver is.:
Citrix Receiver Monitoring System
Right-click on citrix receiver or citrix workspace icon. Then click citrix receiver advance preference.
You will see Advance preference window:
Now click on High DPI. Now select No, use the native resolution. Save the preference and restart your remote session.
Citrix Receiver Monitoring Software
That should fix citrix receiver detecting dual monitor as one issue. I hope it helps.