Text shifting out of text box

Anyone else have this issue or a solution? My team is having a "text shift" issue and we can't figure out how or why it's occuring. Occasionally text will shift out of position, and go lower than the text box itself! It's causing alignment issues, and we can't figure out why it's happening or why it is occurs with some text but not others. It doesn't matter if we have the text box set to auto-width or fixed size, it still happens. We only notice it after we close out the file and reopen it later on.