VERIFIED SOLUTION i
When the language is changed, some of the feature labels are populated with the default language titles and are not translated as expected. Few of them has been demonstrated in the following screenshots:
This has been identified as a defect in Spectrum Spatial Analyst.
ResolutionUPDATED: January 16, 2019
It is scheduled to be fixed in Analyst 2019.1 (19.1) release. Contact Software Support and quote JIRA ID# 'CONN-39912' to know the availability of the fix.