F8 (timing clock) can't be captured (random bug)

Sometimes when I open MTpro it doesn't read the timing clock from my Korg Kp3. I checked with MidiOX and the Kp3 does transmit F8 message.
As a workaround I untick the kp3 midi ports on the midi port settings , close MTpro and then ,when I re-open the project ,MT asks me to open the used ports (the Kp3 ports) and everything works fine...
It's random and can't reproduce it unfortunately.

Hi,

indeed, internally, the MIDI ports have a setting whether to pass thru or filter timing clock related messages. However, they cannot be set from the program, and it seems they are accidentally changed. I'll look into this. I assume you're on Windows?

Thanks,
Florian

Sorry I forgot to mention:
Windows 7 starter 32bit.
The CC,note events pass thru, but not always the F8.