@papichulo I messed up my forum notification settings and I am sorry for this! I am replying just in case this is still an issue for you:

Maintained/latching switches for on my site with the ControlBlock rev. 3.4. Do you have any any special hardware setup? The ControlBlock switches from maintained/latching mode to momentary switch mode, if a logic low signal is observed within 2.5 seconds after pressing the switch for switching the Pi on. Do you observe the same behavior when you replace the button by simple jump wires to simulate a maintained button?