League++ prevents the redirection to the pre battle page from clicking a line since you need to be able to somehow select an opponent to show. the link on the player name in the top right was added together with the option to hide the go buttons.
the go button itself hasn't been touched since 0.3 over two years ago so I'm a bit stumped how that could have been broken by the style changes from earlier.
please reinstall 0.18.0 with the link I posted to confirm that it still worked there.
https://github.com/HH-GAME-MM/HH-Leagues-Plus-Plus/raw/247675a6ab93a2e489b97fa70947d67c37326ea4/HH-Leagues-Plus-Plus.user.js
what's the syntax error? also to help me find what's wrong, which browser and version do you use?