I faced this issue recently after copying content from an AI tool into Word. The words would break at the end of the sentence, whilst normally, the who word would shift to the next line. Also, some lines would have just 2 words, and it is impossible to organise the paragraph by using centre, justify, etc.
After reading about it, I found that Microsoft and Windows use ANSI—apparently, this is a programming language—and the content I copied was from a Microsoft AI tool. Other developers use the same, so if you copy content into a file that uses UTF-8 (normal language we use in words, I guess), then the space appears in small degree signs or circles—on condition that automatic conversion is not present in the program receiving the content. I had the same issue wherever I sent the content unless I copied it into a professional notepad that had auto-convert.
Anyway, to solve this problem, I simply go to advance find > replace, then copy the space with the degree put in the find section, copy the space with the dot or manually put space using my keyboard, then replace all circles with dots, and it works fine.
I hope this helps.