Apart from other changes made to the metagame in response to community feedback.
Splatoon 2‘s Bubble Blower, a special weapon available in some loadouts, had actually ended up becoming far more powerful than it otherwise should or would have been. You see, a glitch with how it worked meant that bubbles ended up blocking all damage from bombs, or specials like the Rain Maker, which in turn made them way too overpowered, and a go-to strategy for many- the Bubble Blower was beginning to dominate the competitive metagame, basically.
A new update for the game (3.2.1) addresses the Bubble Blower, so that it actually acts how it is supposed to now. In addition to that, a problem with the game’s Salmon Run mode, which stopped new Golden Eggs from spawning in specific scenarios (a problem, since collecting Golden Eggs is what the whole mode is based on) has also been addressed with this new update.
It’s good to see Nintendo continues to be responsive to community feedback with ongoing support for Splatoon 2– undoubtedly, that has to be one of the reasons why the game has inculcated such a strong community of players who stick with it.