The font sizes vary randomly in Preview/mobile view only. The fonts appear incorrectly both in Constant Contact's Preview/mobile view, and also a test draft sent to gmail (viewed on iPhone). The font sizes in Preview/Desktop, and test draft sent to Desktop, appear correctly. On the main campaign editor page, the font sizes and formatting you've set appear to be correct. We have not experienced issues with incorrect stacking in mobile preview. Just as the original contributor to this thread stated, we too are copying (not cutting) and pasting from an outside document in plain text (I'm on a Mac/TextEdit; the original contributor was pasting plain text from Word). Our newsletter contains several sections and "typing from scratch" directly into the text fields is not feasible. I first reported this issue to Constant Contact support on March 13, 2020 but they did not have a solution.
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