Outlined Text Trouble in AI

Hello!

Wondering if anyone's run into the issue I'm having. When I outline text in Illustrator and then save my file as a PDF my text is distorting. As you can see below... the L's are thicker than the rest of the text. Does anyone know why this might be happening?

Additional info: I'm using Adobe Illustrator CC 2017 on a Mac.

I created text. Highlighted it. and created an outline by doing Command + shift + o. Then 'save as' a PDF.

Would love any insight on how to avoid this issue! and I wish I could just not outline the text (because then the export looks perfectly fine) but I have to outline it. No one else seems to be having this issue except me and I'm wondering if there's some setting in illustrator that I need to change?

Thanks!