Watchlist monthly projection in day 2 of month is way off

I just went out to dinner on March 2 and that one $75 transaction added $1000 to my monthly forecast spend. I moved it to another category and hey presto that $1000 was deducted.

Seems like even minor spending in the early part of the month makes Watchlist forecasts way off. If instead it looked back over the last 30 days, it would surely have smoothed out my avg spending for the rest of the month and not been so far off.

Has anyone made request for a less volatile forecasting algorithm?