Cubase sound transform

hello. Please contact Cubase. When I use all instruments in Cubase, the sound changes when I turn the recording button on or off. For example, if you select an instrument in an instrument track and then turn the record button on or off after recording, the pitch is strangely modulated or the octave goes down, and the sound completely changes. If anyone knows a way to fix this, please let me know

If you could post a video showing the problem happening, it may be easier to help you.