Forum Editing Posts?

[PTGigi]

I've noticed this forum edits my posts in very unneed fashion D: I can see why such a thing would exist but frankly it's quite bothersome at times D:

Examples:
My thread title 'MM2+' was changed to 'Mm2+'
Saying "HAPPY BIRTHDAY ENDDAYNE" is set to all lowercase D:
Saying "OMG Yus! XD" is changed to 'omg yus xd'

Also it does stuff like:
Add this random </span> thing after code/php tags occasionally on my posts
I've posted stuff in a PHP tag that was not shown, I believe I was posting the HTML for a link and it excluded the second ' I put in to define the link, that's rather necessary since your code will seriously mess up if that's not in there (trust me I've done it XD)

And just a few other bothersome things D: Not sure if this is fixable D:

Also another minor error/glitch (?) I've seen is when I go to a forum section, read all the topics that are marked as unread, then hit to buttons at the top of the forum to go back to the main page it shows the forum section as unread, that is until I go back, view the page where it shows the list of topics in that section, then I can go to any page I want and have it show unread O.o

Yeah just some random stuff X3