What about uploaded hotlaps (WRs esp.) if handicap system doesn't works offline? Some servers requires the drivers to be within for example 107% of WR and esp. in TBO or GTR class non-handicapped WRs are not a good orientation.
There seems to be a bug in W28: if you choose a car or a track (here always) by clicking on the picture instead of the text LFS will crash; tested online and offline.
A strange bug appeared just 20min ago: on "OLT Pro Racing" every car except the own lagged resp. car position wasn't refreshed anymore, and the same happened again right after a server restart but chatting, setting new PBs and completing the race was still possible. I remember the same bug appeared before with W17.