Problem finding COM device in Arduino DUE with 25V caps

I just got a few new Arduino Due boards. All of them with 25 volts capacitors (SERIALS D000394XX) and I have noticed that it is necessary to press the erase and reset buttons everytime I need to load a sketch, otherwise I get the following:

Send auto-baud
Set binary mode
No device found on COMXX

Such a thing has never happened to me before using old Arduino Due boards with 16 volts caps.
Has anyone experience this lately?

Regards,

p