This isn't really a bug in the program.... Honest!

The problem here is that the "Pressure Plate" labor time in the Installation Labor section of the frame labor has been changed to calculate this type of labor by the foot. Initially, this labor item was a lump sum valley, be we quickly realized that it needs to be figured by the foot.
So what use to be a close number of minutes for an entire elevation of pressure plate labor, is now way too much time when multiplied by the total lineal feet of the face of a frame. You will want to try numbers like 1 or 2 in the Pressure Plate time field for Installation Labor.
Remember that changing your default labor is different than changing the labor for a given elevation in a job. When you change elevation labor, you only need to Process the labor again for that job. Also, remember that you can skip between elevations in the labor window by using the arrow control tool in the bottom left corner.
Also remember that when you Re-apply Labor Defaults, you are wiping out any changes that you made to individual elevation labor for that job. These numbers are all getting replaced by the defaults you have set in the Labor Defaults window.