Midi clock over usb with Easy midi ok?

[Re8et]

I was playing some ext hw (OP1, tr-08 boutique) connected with usb
and with Easy midi enabled (otherwise it would not work)
Create a Midi interface but send midi clock is disabled, greyed out.
Op1 receives notes but do not clock sync. Same for the Tr-08 boutique.
Is it normal? Bug?
I know standard Dim midi midi clock works...
Anyone has some experience in this???