Note Movement does not Maintain Correct Key Signature

At times when moving an already created note up or down on the staff, the program will mistakenly change the note to a sharp or flat even when that does not correctly fit the current key signature. For example, the key signature is Gmajor, which has an F sharp. If the note on the staff were a G, I would move it down to the F line, where it should stay normal without any accidentals because all Fs are sharped. However, the program automatically (and incorrectly) moves the note back to the G line and makes it flat - essentially playing the same note, but this way of writing out the note is incorrect with the key signature.