A documented pause or water-saving trickle setting can intentionally leave some flow. Waterpik's cited hand-shower instructions distinguish this control from the primary shower shutoff and say it does not stop water completely. Identify the actual model and restore its normal setting to compare behavior. Finish by closing the shower valve; a persistent valve-off leak needs a separate check.
Pause is a separate control from the shower valve
First identify which control you pressed. A button or slider on a hand shower can reduce flow while the wall valve remains open. Closing the wall valve is a different action. This answer uses Waterpik's documented hand-shower instructions and FAQ; other brands and digital controls need their own operating directions.
Waterpik's shower FAQ says some products have a water-saving trickle setting that does not stop the water completely. A small continuing stream in that selected mode can therefore be intended behavior, rather than proof of a leaking cartridge.
Compare the actual operating settings
The standard hand-shower manual, FN 20022557-F AC, describes several controls used on different models. Some select spray with a lever or face ring. Some have an EasySelect handle ring, a rear trickle toggle or a pause control in the handle. Do not assume that a button with a similar appearance uses the same sequence.
Use the actual owner's directions to return to normal spray. Note whether the expected spray returns and whether the control operates freely. Do not force a stuck slider or dismantle its internal valve to make a trickle stop.
The manual explicitly says its pause button does not shut water flow off completely. This page describes that manufacturer's operating behavior; it does not turn a general FAQ statement into a verified code rule for every address or shower product.
Use the primary valve when you finish
Turn the shower off at its primary valve rather than leaving the wall control on behind a reduced-flow setting. A head control is not a substitute for final shutoff or a reason to install an improvised blocking device.
Keep temperature checks separate as well. Waterpik's manual directs owners to check the tub or shower water before bathing and consult a plumber if the valve type is uncertain. A pause indication does not certify temperature protection. If the water becomes unexpectedly hot, stop bathing and arrange assessment before using it again.
Report a different symptom separately
Water continuing after the primary valve is closed belongs in the showerhead leak investigation. A head that remains weak in its normal setting belongs in low shower flow checks. Neither condition is explained away simply because the head has a Pause button.
Low-flow showerhead selection concerns the product's normal rated output and compatibility. Its rating is different from a temporarily selected trickle mode. Keep the model, control position and when the water continued flowing with any service request. Those observations distinguish an intended setting from a stuck control or another plumbing fault without guessing from the word Pause alone.