Using the Raster Calculator feature, by just clicking on the "B3- Blue" channel in the Raster Calculator
It immediately shows "Invaid Expression". But this error does not appear on B1-Red and B2-Green.
This should be a bug.
I understand that we should just input B1, B2 or B3 instead of "B3- Blue", but clicking the "B3- Blue" button automatically inputs "B3- Blue", which makes users confuse, it should just input B3 .