How frustrating. And is this in all browsers? Or just IE? Since you say SharePoint 2013, I'm assuming this is not Office 365 - is that correct, that this is an on prem server? I do see in Edge & IE that line spacing is wider than in client in a quick test form, but I'm not seeing the issue with words cut off or not wrapping. Oh! and once I set the RT box to NOT expand, but to show scroll bars when necessary (under the properties, Display tab) it started behaving itself in terms of line spacing. Have you tried that setting?
Hilary Stoupa
