I think the problem (if a problem) remains in Powerbuilder 12.6 in a migrated project. Each input text remembers the language that had been typed before I change the language in another input text.
Is there any way to fix this issue? E.g., change the language globally for every input text?
For future reference: From PB12.6 help:
I suppose the only solution is the workaround using Windows API.
see: http://scn.sap.com/thread/3414562