RC oscillator with op amps
The voltage of point B is fed by voltage source V4. Nothing else in the circuit affects it, V4 outputs what you have written it to output. The circuit is not an oscillator.
I do not know all versions of Micro-Cap. You may have a possibility to insert an internal series resistance to V4, but I guess it's now = zero ohms. Those versions of Micro-Cap that I have tried no invisible internal series resistance can be inserted to voltage sources.
ADD: There's comments where the questioner say that V4 and V5 are sine voltage sources. To make the circuit to have a possibility to be an oscillator those voltage sources should be simply wiped off because they rigidly output certain predefined voltages. The lecturer in the school may have drawn there in the places of V4 and V5 voltage meters to show that those voltages should be inspected in transient analysis.
Another good idea to check the oscillation possibilities is to keep V5, remove the wire between R3 and X1 and check with AC analysis is there a frequency where the amps+the RC network together cause exact 0 or 360 degrees phase shift and amplify more than attenuate. V4 should be removed also in this case.