With this theme, you get the option to use a drop cap style on the first paragraph of your full post. A drop cap will always show at the start of the first paragraph and usually is no less than 2 lines, but a more standard is 3 lines.
If you decide you don't want this to show, this will show you how to disable it.
- Go to Appearance >> Customize >> Typography Settings
- Look for the "Show Full Post Drop Cap' setting and uncheck the box next to it.
- Click "Save & Publish"