Artifacts in Captivate output

[#1]

I'm working on a responsive project in Captivate 2017 and recently submitted it to the client for feedback.  They noted some little artifacts that look like the letter "L" near the end of a couple of numbered items.  These items are just text inside a smart shape, nothing more.  Apparently the client is using Internet Explorer to review the output, and provided me with screenshots of what she's seeing. I can't replicate this, no matter what browser I use.  She's also pointed out that the "w" in the text is not displaying correctly?  I've included the screenshot set to me.

Has anyone else seen this type of thing?  Any thoughts?

[#2]

Did you use CTRL-Enter or SHIFT-Enter instead of a hard return?

[#3]

Thanks Lieve - no, I only ever use hard returns. I think this is a browser/device issue, but wanted to check with other people before telling the client it's not a problem the Captivate output.

[#4]

Those marks look like formatting marks.

Do you copy and paste text into your Captivate project from another app such as MS Word or PowerPoint?

[#5]

Yes, that is why I asked about the use of Enter or soft Enter.  This is the typical symbol for a soft return( not sure about the exact term).

[#6]

Hi Rod. Yes, that's what I thought too - but I pasted the text as plain text, and so far it's only the client (unfortunately) that's seen them in the published output. I believe she was using IE, not sure what version.  I can't replicate the issue on my Mac, not in any of my browsers.  I'll keep digging away at this one.

Happy new year