[whpalmer4]

When you apply a style to a row, and then create a new row immediately after it and start typing, you get the style of the previous row. If you're creating a new block of material, I think this is a better default for many, as opposed to having to style each new row. If you don't want this behavior, when you create the new row, immediately bring up the Style Attributes inspector and click on the (x) to clear the Selected row styling. Or maybe don't apply those "unusual" styles until you've created all of the rows, if you don't want to be interrupted while typing away...

Style a row and keep typing new rows at that point, and the style sticks. Not really that hard to understand, once you realize what the behavior is...