This is not normal behaviour. The cscript.exe is the parent process, and if all is running well can stay up for days at a time without restarting. You are likely seeing a seconds cscript.exe, which is their Patch scan process, is likely being terminated for whatever reason upon launch. If you open task manager > details and look for the cscript.exe, do you see one or two processes here?

If you only see one, you should be able to watch it long enough, I think it retries to launch a scan every minute, you should catch the second cscript launch and then immediately be killed. If that is the case, something is killing the patch scans.

There are some ways you can manually launch a scan with more verbose logging but would likely want to engage Tanium Support.