It might feel like that, but if it is the ABS on that wheel it is attempting to get the wheel spinning again at the desire relative between the wheel sensor signal and the vehicle speed sensor signal. And it will feel out of sync with the other wheel operating off the master cylinder fluid path.
The ABS, if activated on the circuit for a particular front wheel, is trying to get the wheel to recover to its desired speed. There are two solenoid valves per front wheel in the module, and a single pump for both wheels. One valve normally isolates the ABS path from the normal master cylinder path to the wheel, so you just operate off the master cylinder and U foot on the pedal in normal mode. Under ABS active, the iso valve closes and now your on the ABS circuit. The other valve is dumping off the locked up fluid (due to the iso valve closing) to an accumulator closing back again to allow the pump to build pressure. The two valves work in conjunction with each other along with a pump to pulse on and off for the dumping and reapplication of pressure to the wheel.
So the scenario goes like this. You hit the brakes and wheel relative signal for one wheel isn't what the computer likes and it goes into ABS. It closes the isolation valve to get off the master cylinders building of high pressure due to your foot on the pedal. You are now on the ABS circuit for that wheel. But the computer still doesn't like the signal and thinks the wheel is locking up, so it dumps the ABS pressure to try and get the wheel going again (usually rapid on/offs of the dump valve). The dumped fluid also feeds a pump which builds pressure against the iso valve. The pump output path is also in MC path to the iso valve. The pedal can feel mushy as the pump operates and takes fluid from the MC. The iso valve will also pulse open to allow this reapply of pressure, and the dump valve will pulse to dump pressure. All of this to try and get the wheel speed back but closely controlling brake pressure it needs to apply braking force. The ABS wants the wheel rolling but it also wants to have pressure available to slow the wheel when it needs it.