That was quick. Thanks !
But the Tap Tempo LED behavior is still not correct when MIDI clock set to Slave (with an external MIDI clock from another device coming in via the MIDI in jack). Sometimes it won't light up, sometimes stays lit, and sometimes flashes faster than the actual BPM regardless of Divide knob setting, when switching between Master to Slave modes. And, as I wrote before, that bug dates back to the very early firmware versions and never got fixed.