Dialog box garbled when language changed

I have WinSCP 5.1.5.
When I change the language, the dialogbox is garbled, see image (the black part is by me). Ending WinSCP and starting it again solves the problem.
(Sorry, the system won't let me register)

Thanks for your report.

This bug has been added to the tracker:
https://winscp.net/tracker/1038