Why Does the 2nd Stage of a 2nd Order Low Pass Filter Affect the 1st Stage in Multisim?

I'm interested in audio design and was messing around with NI Multisim building some basic filters. I created a 2nd order low pass filter with capacitors and found that the 2nd stage of the filter impacts the frequency response of 1st filter as illustrated below.
This would seem to indicate that you would run into issues designing more complex filters or tone stacks in a block by block manner as components in later blocks would affect the response of earlier blocks.
I don't know why this is and was hoping someone here could explain it to me
Thanks,
Jordan Street

In practice, you don't use 1st filter and 2nd filter in cascade, because it's obviuos that the 2nd filter will impact the first, because it's more steep.

You choose the order of your filter (and type: Butterworth, Chebishev, etc.) by knowing what steepness you need in the characteristic curve.

You do need to account for the input and output impedances of cascaded filters. Think about the difference in your circuit versus an active cascaded circuit using high impedance inputs and low inpedance outputs.