[Agama]

I'm struggling a bit with that file - it's a tricky character set to read in my editor. Could you make a cut-down version in English, just a couple of paragraphs would be fine? A corresponding image showing the mobi problem would also be useful. I'm not quite sure what you mean by spaces between sentences as calibre usually compresses multiple consecutive spaces into a single space. Are you talking about horizontal or vertical spacing?

Still using the cut-down sample: Do you get the extra spaces if you convert to ePub?

An after-thought
Perhaps you are not talking about "extra" spaces but rather than you don't even want a single space betweeen any sentences?

This might look a bit odd.Rather like the sentences in this paragraph?Is this what you actually want to achieve?This paragraph has no spaces between sentences.It's not so easy to read!