Masha has a handbag on the station (white shoulder strap) but she has not been seen with one in any of the previous scenes.
Masha ducks under the boat in her underwear and the next shot is of her fully dressed with no indication of time passing.
When Masha and Alexander are walking along eating, the hat he purchased for her is cannot be seen. But she has it on the station platform in the final scene.
When Masha and Alexander first take shelter from the rain, it can be seen in the background that the wet road surface only extends for a short distance and that people are standing still not seeking shelter from the rain.