Post the bugs you've found here. Please be as specific and as constructive as possible; the more info about the issue you include the easier it will be for us to fix it.
Other forums you can check:
https://e621.net/forum_topics/25717 - List of changes that are NOT bugs
https://e621.net/forum_topics/25748 - Quick FAQ/Q&A thread
https://e621.net/forum_topics/25718 - For documentation problems
https://e621.net/forum_topics/25716 - The theme/aesthetic issues (please read the main post before using)
If you find other bugs floating around in the forum you can post a link to those forums here so they don't get lost.
If you already made another thread for a bug then please go edit [Bug] at the start of the title so it's easy to spot.