XIAO RP2040 failed @ Wire.write (I2C)

[numeru55]

Using both

rp2040:rp2040    2.0.2   2.0.2  Raspberry Pi Pico/RP2040                  
Seeeduino:rp2040 2.7.2   2.7.2  Seeed XIAO RP2040  

I2C scan is OK for both core:

    Wire.beginTransmission(0x40);
    byte error = Wire.endTransmission();

But Wire.write() is ignore only for earlephihower:

    Wire.beginTransmission(0x40);
    Wire.write(byte(0));
    byte error = Wire.endTransmission();

Seeed core : address byte and 0 are transmitted normally
earlephihower: nothing is transmitted on I2C line. Why?

[numeru55]

Moved to issue:
#594