It may be that! This is still KDE though i have not switched over yet, but it seems there is a running mako process while using KDE
ps -aux | grep mako
vramch 3813244 0.0 0.0 108152 24876 ? Ssl 15:09 0:00 /usr/bin/mako
if its part of sway it seems its capable of running under kde also?