When I'm typing a reply, pressing enter starts a new line. When the topic posts, all carriage returns have been removed and the text is in one line. This also applies to signatures. This OP was posted in four lines.

Generally every line break here is 1&1/2 I copy/pasted something, that was originally 4 lines and posting it put it all in one line. So I edited line breaks and it just looked weird, because instead of being in one bulk, it also came out with 1 1/2 distance not distinguished from the former paragraph.

Another example of the spacious layout here on Kumos.

And it always takes me a while to find the "Post reply" button underneath all the check box options.

Again Subeta's Forum set up is so much clearer and more intuitive.

not only line break doesn't work, this forum doesn't accept spaces, either - I can type 100 spaces, it will still only show one, which renders formatting to make text more understandable or stick out impossible.