Printer stuck full on after print is done

[Daddyguitar]

Hi!For the first time since 2019 my Anycubic Mega S is doing something strange.At the end of the print, instead of turning off the bed and extruder heating and going into the "rest position" making the "print is done jingle", everything stays on.The print came out as usually but the printer get stuck above the print with fan on, heating on and doesn't alert me that the print is finished.The only thing I've done recently is using CURA plugin to print some Temperature, retraction speed and distance towers and change the values accordingly. Nothing else.It happend yesterday for the forst time and today, printing the same thing but after a re-slice for minor changes, it happened againg. Exactly the same thing as yesterday.Any clue of what could have happened?Thanks