The Thai alphabet (whose ISO space your characters use) has vowel and tone-mark symbols which appear above a consonant. The text you post has many many such marks cascaded on top of each other. Evidently, some software (browser?) “knows” how to place such marks on top of preceding symbols … but doesn’t know when enough is enough!
When I hit New Posts, I thought I had just scrolled at the same time or something like that and didn’t give it much thought, but when it didn’t go away at the same time…and I saw the thread title I clicked on it and saw that mess.
It does a very similar thing with the Tapatalk app on android, but with Firefox on Linux it displays normally, just a couple weird characters on the bottom line of the post.
The quoted post (hope I didn’t ruin anything by doing so) is crazy. When I scroll down to it, scroll back up, then back down it looks markedly different. Also I had to scroll several screens to the right to find the quote button. I’m not in the habit of reading Thai, but when I do see it online in other places it displays normally.
OP has barrages of three separate symbols. Chrome displays all three vertically. Firefox, for some reason, displays two vertically and one horizontally.
I get them diagonal. About 50 degrees from horizontal, I’d say. Both leftward and rightward.
Where? No post answers it. Were you saying that these posted characters are “flawed” in the sense that too many/wrong diacritics are in there, or are you saying that the text is “real” Thai (even if nonsensical as a sentence) and shows up fine if you use different software?