ShipScript has been an eBay Community volunteer since 2003, specializing in HTML, CSS, Scripts, Photos, Active Content, Technical Solutions, and online Seller Tools.
I have seen that issue appear in a few motors listings, and it might be related to whether using the app or desktop program. Which did you use?
You are seeing some "HTML code" in your text. The non-breaking-space symbol ( ) is often added when two spaces are typed together to end a sentence (the old typist's requisite). If you can force yourself to use only one space after a sentence, you might see that go away in future efforts.
For now, you could revise your listing and manually remove all of those codes.
