CAL Licences not being Issued and memory usage increasing

I have a Windows 2012r2 server that is not issuing CAL licenses but still running remote desktop sessions. Meanwhile the memory usage of the svchost (termsvcs) steadily increases over 4-6 weeks until it needs rebooting.

Has anyone seen this?

Here is a picture of the server in question.

Here is a picture of another server that is similar that is issuing licenses and not suffering with the same memory issues.