Teensyduino 1.57 Beta #4

Running with a new T_4.1 trying out the IDE 2 on Win 10 laptop. Starting with LittleFS to test the QSPI soldering. It triggered a really cool SerMon Spasm I'll go add to that last line cropping: arduino/arduino-ide/issues/972

It is jumping up/down on static text as it calcs/recalcs the last line location - got this with phone camera:
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