I apologize our line spacing feature is not working as easily as it should! Are you seeing this happen with any particular text or particular email campaign? I have taken a look at a few of your most recent email campaign can see your text is currently set to a 1.2 line spacing. One workaround we suggest is adding new text blocks into your campaign and setting its line spacing to 1 before adding your stories. Also, is any of your text copied and pasted from outside sources? We have seen some cases where pasting information from outside sources can carry over problematic formatting. Problematic formatting, along with different font sizes can cause changes in spacing. Larger font sizes will automatically add extra spacing. So this is something we would suggest keeping an eye on as well!
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