I did, but it was "caught up," afterwards.  There ended up being no gap, it just slowly worked through the coins mined from 2+ hours, and is now down to 20 minutes behind (which is normal for me).  I am still seeing the same gap as you in the graph, but there was no missed time in the "last 50 Earnings" tab, all the work done got kinda mashed into the graph after the gap.