Yes there is a lag there and we don't know what it is. It is not related to the new style and has been happening for weeks. My guess is an inadvertent bug introduced by an add-on, or XenForo introduced a bug in their last update.
How can it not be related to the new style when it was fine prior to the new style being implemented?Odd, seemed to be working fine for me until literally the day the new update went live.
It was literally fine before the change. It comes across as ludicrous to suggest it's not related to the new style. The first - and only - time it's ever happened was when the switch was made.