Signal in and out of flip according to IEEE symbols
The mistake you are making is that the inputs are inverted.

In the IEEE Std 91/91a-1991 rectangular shape standard, a half triangle on the top of a pin indicates that the signal is inverted.

For example, this is a single bit inverter. Notice the triangle on the output indicating inversion:

 

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The same thing applies to inputs. Notice how the Load input is inverted in this symbol:



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So basically in your symbol, S and R are active low signals, i.e. they are considered "asserted" when they are low.