Computer Configuration > Administrative Templates > Citrix Components > Citrix Workspace > User experience
Machine
HKLM\Software\Policies\Citrix\Ica Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Keyboard
Select the required option to display the language bar in a session. The language bar displays the preferred input language in a session. This policy is not configured by default. When you disable this policy, the language bar is displayed in an app session.