When connected to various sessions on Citrix Workspace app for Windows, if a user launches any apps or desktops from a MAC device using Citrix Workspace App for MAC, sessions opened on the Windows endpoint are automatically getting launched on the MAC endpoint. 
For example, user launches their published VDI on Windows endpoint then moves to their MAC endpoint and launched any published app. They will then see the published VDI launch on the MAC endpoint also. 

Click the down arrow icon  in the Citrix Workspace app for Mac window and choose Preferences.

Under the "General Tab". You will need to make sure the two settings for "App access across devices" are unchecked. 



Once these settings were unchecked, issue no longer occurs. 

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Problem Cause

Expected behavior when "Reconnect apps when I sign in to Workspace" and "Reconnect apps when I start or refresh apps" setting is enabled from Citrix Workspace App for MAC

When connected to various sessions on Citrix Workspace app for Windows, if a user launches any apps or desktops from a MAC device using Citrix Workspace App for MAC, sessions opened on the Windows endpoint are automatically getting launched on the MAC endpoint.  For example, user launches their published VDI on Windows endpoint then moves to their MAC endpoint and launched any published app. They will then see the published VDI launch on the MAC endpoint also. 

https://docs.citrix.com/en-us/citrix-workspace-app-for-mac/configure.html#to-configure-workspace-control-settings