Improved the comment added in the previous commit

connector/src/main/java/org/geysermc/connector/network/session/GeyserSession.java

@@ -582,7 +582,9 @@ public class GeyserSession implements CommandSender {
                     protocol = new MinecraftProtocol(authenticationService.getSelectedProfile(), authenticationService.getAccessToken());
                 } else {
                     // always replace spaces when using Floodgate,
-                    // as usernames with spaces cause issues with Bungeecord's login cycle
+                    // as usernames with spaces cause issues with Bungeecord's login cycle.
+                    // However, this doesn't affect the final username as Floodgate is still in charge of that.
+                    // So if you have (for example) replace spaces enabled on Floodgate the spaces will re-appear.
                     String validUsername = username;
                     if (remoteAuthType == AuthType.FLOODGATE) {
                         validUsername = username.replace(' ', '_');