Date and approximate server time: 15 July 2026, at approximately 08:20 server time Characters involved: RRTOM > other 3 characters in order> AATOM > AAATOM (Six characters in total) Description: I would like to report a possible bug involving the multi-client restriction for the Anniversary Cake Boss event. On July 15 at approximately 08:20 server time, I was completing the Cake Boss event on six of my characters, one at a time, in the following order: RRTOM > other 3 characters in order> AATOM > AAATOM I normally complete the event separately on each character. Near the end of every Cake Boss run, usually when the boss has around 15% HP remaining, I use my next character to check whether another channel has enough space. Under normal circumstances, if my current character is still participating in the event, Daniel the npc will prevent my next character from entering and display a message indicating that only one account may enter at a time. However, while I was completing the event on the second-to-last character, AATOM, I checked the event on my final character, AAATOM. Unexpectedly, AAATOM was able to enter the Cake Boss map even though AATOM was still inside another Cake Boss instance. I was very surprised because this had never happened during my previous runs. After taking a screenshot and sending it to my friend, I immediately exited the event on AAATOM. Unfortunately, because I reacted quickly and did not initially have recording software open, I was unable to capture a complete, uncropped screenshot showing the full game interface and server timestamp while both characters were inside. After AATOM finished the Cake Boss, I spoke to Daniel but did not click through the NPC dialogue a second time to leave the event area. During this period, AAATOM was apparently still able to enter the event. I unfortunately forgot to take another screenshot of this occurrence, but I hope the relevant entry and map records may be visible in the server logs. When I later completed the event on AAATOM, the client was also experiencing unusually severe lag. It took me a little time to open OBS and begin recording, so I am not certain whether the lag was related to the same issue. Because I play from mainland China, I need to use Cyber Game Booster in order to maintain a stable connection to the server. One possibility is that the final client may not have connected through the game booster correctly. However, I opened and used the clients in the same order as the characters were played, so I do not know why this particular client was able to bypass the normal entry restriction. I did not intend to participate in the event on two accounts simultaneously, and I exited immediately after realizing that both characters had been allowed inside. I am reporting this because the multi-client entry restriction may not have functioned correctly under these circumstances, and I hope the information may be helpful for investigating and improving the event system. Evidence: as attached with 2screenshots and 1 video (please ignore the background sound i muted so have no idea there is a sound QAQ) Thank you very much for taking the time to review this report and investigate the issue. I sincerely appreciate the work that the GMs and development team put into maintaining and improving the game.