Bug/problem with Post display

Hi All... It appears that, when I create Posts (BLOG entries), using a newline in a paragraph (i.e. in a paragraph block, using shift-Enter instead or just Enter at the end of a line, to keep lines together), they appear fine on the edit screen, preview and the blog page, but the lines appear all merged together into a single line on the Home page, something like: On Home page: This is line 1This is line2This is line 3 On Blog page - after clicking the Post title and viewing on the Blog page: This is line 1 This is line 2 This is line 3 And note that, in this forum, I used the same shift-Enter to keep the above lines together (i.e. without a paragraph separation between them as occurs when pressing Enter which created a new separated paragraph) I'm surprised such a bug exists in these themes - will this bug be fixed? Is there a workaround? Thanks