Type ahead functionality works in the catalog search while you are searching for an item it will give you suggestion of the existing item in that catalog.
But this is the case where it is not working for any other laguage other than English.
This is not dependant on any client specific setting.
Could happen in both integrated and standalone LMS instances.
Reproducing the Issue
1- Go to catalog search,
2- Type a item title which is in the catalog if the suggestions comes up then eveything is fine and there is no issue, but if you are not getting any suggestion that shows that the issue could be what is stated here and the solution could help.
In this particular scenerio the problem was
1) There is only English language pack installed in the LMS instance, and thus the type ahaead is not working for anyothetr language other than english.
You should have the language pack installed in the system and then test.
Catalog Search, Search, type ahead,catalog , KBA , LOD-SF-LMS , SuccessFactors Learning , Problem