Filter operators on Report UI is showing in a different language rather than the expected language that is selected. This issue only affects the new report UI and it doesn't happen on the classic report UI.
All releases that use the new Report UI.
Exact root cause is undetermined but likely a caching issue on the server as the issue only affects certain nodes in the instance.
1) Determine which node(s) is having the issue (current node being logged on can be found through /stats.do page).
2) Request for the affected node(s) to be restarted.