Teensy 4.0 does not work on Arduino 2.1.1 but works on Arduino 1.8.19

[syagger]

Arduino 1.8.19:
compiling is ok, sketch works.

Arduino 2.1.1:
compiling is ok, but, uploading process stuck and need to reboot Teensy.

file "lin_bus.cpp"
void LIN::begin(HardwareSerial* stream, uint16_t baudrate, uint8_t break_characters) {
(*stream).begin(baudrate, SERIAL_8N1); // problem with this call, if it commented upload is ok, but sure sketch does not work.
this->_stream = stream;
..............................