Mute issue

Hi,
i have an issue on my Machinedrum sps-1 mkII since i updated to x05 firmware.
the LT & CP tracks are still playing when muted !
when i press stop once then play it plays correctly but when i press stop twice the problem happens.
Anyone has experienced the same issue, any idea? i tryed factory reset but didn’t help.
thank you,
Brian.

Have you tried the most up-to-date Firmware x.09?