Weird invisible characters are automatically added to comments?
69723
Occasionally, the Unicode character sequence U+200C U+200B (ZWNJ ZWSP) is inserted into comments
18393
I can't write Chinese characters in edited posts, but OP could when posting
101911
I do not get notified when the system adds a canned "possible duplicated" comment
138722
The system sees a comment that doesn't exist
113137
Italics markup not working in comments
20867
what is the purpose of the extra asterisks in php comments?
32317
Code Formating in Comments
14519
Colored marks appearing in notebook input text?
47847
Recognize URLs in angle brackets in comments
20114
Why are usernames allowed to be composed entirely of non-visible Unicode characters?
114053
How do I remove default comment validation in drupal 7?
58852
Using @ signs in comments without invoking comment replies?
149530
Large amounts of white-space in code cause comments to overflow in Firefox
16706
Thousands of itty bitty comments that break the 15 character minimum rule
49430
"Add/show 1 other comment" bug strikes again
143454
Why the 15 character minimum on comments?
48784
Comment font sizes are inconsistent on Android