I'm using an MKR1010 and am trying to run the SerialEvent example: https://www.arduino.cc/en/Tutorial/BuiltInExamples/SerialEvent

I recently updated to the 1.8.13 release a few days ago, and I'm trying to send characters using the serial port monitor as required in the serial even example. The serial port monitor it freezes up after a random number of characters - sometimes 1 sometimes 3. I haven't received any output over the serial port monitor as the sketch should provide.

EDIT: I came across this post on the element14 forums where someone mentions that serialEvent() can't be used with SAMD boards (https://www.element14.com/community/thread/74359/l/reading-uart-rx-buffer-mkr-wifi-1010-mkr-1000). There's no reason given - but can this be officially confirmed? I don't see it in the function's documentation: https://www.arduino.cc/reference/en/language/functions/communication/serial/serialevent/

Also - this might be a separate issue - the library manager is throwing Java concurrent execution errors when I try to open it.