VcXsrv sometimes enters loop repeatidly hitting ?forward? key

Hi
First thanks for your very good job.
I hit regularly an anoying issue when using VcXsrv with a linux virtual box virtual machine running as a guest for Win10. VcXsrv is used through ssh and either a briged interface or a private host interface.
Some time when selecting characters in emacs through the right arrow keystroke (forward), the server enters a loop and select repeatidly all chars available. Most of the time it ends when no more chars are available (not sure when/how it ends). I had in one or two occasions a crash of the X server. In these cases, the repeated keystrokes seems not to end at the end of the edited file.
If I'm able to reproduce it with another X application than emacs I will enrich the ticket.
I will also try using a direct connection without ssh (when guest VM is running locally)