The bottom thread with templates became bold while being offline. I logged in, left a comment (the thread above), and logged out, but the thread did not become marked as read from being offline. After that, I logged in and out again. All threads from being offline should probably become marked as read.
It seems that saving the main forum page is now working.
I tried to edit my message above and couldn't. If I insert a screenshot from an attachment into a message, save it, then click edit to write something else under the screenshot, it doesn't work properly. I place the mouse cursor under the screenshot, press Enter to start a new line, but the screenshot moves down along with the cursor.