I've seen this happen in a few runs now, so I figured I would come on here and tell everyone so less runs will get rejected for this reason. If you are using the old splits please make sure you're using the the old autosplitter. If you use the old splits with the new autosplitter, depending on the splits (Jill any%/100% come to mind), it will not split correctly and the timer will end before the elevator going to the helipad. The old splits did not account for going into the save room in Mansion 2 to get the acid rounds, and the new autosplitter will force 2 splits, one for going in, and the other for going on, when going in there to get your ammo for Yawn 2.

Also if you are using the new autosplitter, please make sure that you are not using the old autosplitter on top of it, as that can potentially lead to double splits when you go into a room, which will also cause the timer to stop early and make the run invalid.

Also while we're here, if you are using the new splits, specifically the Chris runs, check to see if they are labeled correctly in the splits. Some of them are incorrectly labeled, for example in some of the Chris splits it will have Courtyard 2 listed twice and will stop splitting once it reaches the second Courtyard 2. If you change that second one to Courtyard 3 it should work properly. This won't get a run rejected because the timer doesn't stop, but it will get your splits from there on saved so you can compare them to future runs later. :)

When tested, a combination of old splits with new autosplitter never ended timer earlier. It's because the final trigger is used the same way as in the old autosplitter!

Something else must be wrong here and I'm working on it. But yes, the "new" autosplitter, that is used by Livesplit automatically, is optimized for the new splits. If you prefer the old splits, you can keep the old autosplitter. If you want to convert, you can do this as well. Don't forget to check out the ReadMe that was created for the new autosplitter: https://github.com/xSHiiDOx/BiohazardAutoSplitter/blob/master/README.md

If you have any questions, feel free to ask here :)

Also, i recommend to check the ressources from time to time since the split-files (and other ressources) were updated from time to time. For example: The bug, that Courtyard 2 was shown instead of Courtyard 3 was fixed months ago and the files are already updated :)

Update: Bugfix is live now :) Pay attention that your very last split has the correct name ("Laboratory - End" for new splits, "End" when using the old splits)