I blocked someone because they kept insulting me for no reason, and they still keep posting on my threads (as seen in the Last Post field on the thread list). I don't see their posts because I've blocked them, but they most likely continue posting the insults.
Why should the users that I block for the exact reason of being annoying be allowed to VIEW my threads, let alone POST on them?
Our block feature works more like you saying "I don't want to interact with this content" it's not an all encompassing feature. I personally don't use it and just take measures to purposefully not interact with users who gave me bad experiences. This might be a thing getting addressed in V2 we can hope.
FINALLY GOT THE 15K WARDROBE DONE!!!!! Next up gutting and selling it.
What's against the rules is to try to directly contact an user that has blocked you (that's why that list exists, so we can avoid so), but posting on a thread made by a specific person doesn't necessarily implies they are speaking to you. Some users are quite active on the forums so they might just be posting in yet another thread, that just so happens to have been made by A or B. Anyway, the blocked can choose to block back but if they don't it's not fair for their experience on the site to be affected negatively for possibly no reason and at the mercy/choice of other users, especially when the reason for a block can range from actual harassment to the pettiest things.
If you feel someone is posting far too often in your threads and suspect of harassment you can always file a ticket (or unblock them for a day and check it yourself ¯(ツ)/¯). However, if they aren't breaking any rules then there's nothing that can be done, after all, the forums are public.
As said, there's interest and plans for a revamp of the system but for now it is what it is.
... That's a fantastically asinine glitch. File a ticket.

It's intentional that blocking a user doesn't prevent them from viewing your threads (IMO this is fine due to things like bugs, event threads, etc.) but personally, I rarely feel comfortable responding on a thread of someone who's blocked me just in case it looks like I'm speaking to them (unless I'm responding very specifically to someone else in the thread).
I know it's become hard (if it's even still possible at all) to look at the forums and read their post(s) now to tell if it's an attempt at contact or not. I would second filing a ticket and let staff check into it
I think the idea is that if you make a guide or a helpful resource, people that you blocked shouldn't be blocked from the guide/resource. Not saying that it's the best way to handle things but I believe it was the intention.
Ok, I'll try filing a ticket.
EDIT: An UA has told me that there's nothing that I can do regarding that & to stop bothering.
Apparently filing a ticket doesn't work in cases regarding blocking... apparently another user needs to report if there's actually harrasment and the block has forbidden me from looking at their posts.
That's a bit of a misrepresentation, and I'm posting in an effort to clear up any misunderstandings for anyone viewing this thread.
Once you block someone, they essentially no longer exist for you. Let that person stop taking up your mental real estate. Forget they exist. They're essentially gone. The idea is that it gives you a break from someone who is negatively affecting you and/or your mental health. Blocking a user isn't intended to be any sort of punishment for the user in question (staff handles disciplinary actions, not random people on the site). Blocking them keeps them from being a problem for you anymore. Obviously, if you are concerning yourself with everything they may still be posting or continuing to worry that they exist, you are not allowing the blocking system to do its job and misunderstanding the purpose of the block.
Harassment is reportable, obviously, and punishable. People don't just get away with inappropriate behavior on the site. We handle it. And if someone is behaving terribly, but you have them blocked, it's not something you need to worry about; staff will handle it. Staff will see it and deal with it, if it needs dealt with. If staff somehow manages to miss it, it's common for other site members to report particularly egregious behavior. You may not see it, but as someone who works in the Ticket Center full-time, I can tell you that when things get out of hand, we get a lot of reports about it (and we appreciate that people are keeping an eye out). It's not your job to singlehandedly police the behavior of someone you don't like, and not something that you need to worry about. :)
If someone attempts to evade the block, that's obviously problematic, so let us know if you have someone blocked and they've evaded that block, and we'll deal with it. Commenting on a post that you happen to have posted, or commenting on a post that you have posted in, or expressing an opinion that is different from your own is not necessary harassment, or block evasion. You'll know if someone attempts to evade the block because they will have contacted you through some means, or had someone else contact you on their behalf, etc.
Ultimately, I think there's a bit of a misunderstanding here of what constitutes harassment vs. a personal disagreement, and what the block system is for. I hope this clarifies a bit. :)
Since this matter was discussed and handled in the ticket and further clarified here, I'm going to go ahead and lock up the thread before things get too derailed. As always, if there are any points of confusion regarding a rule, the best place to ask is in the Ticket Center so that you can get an official staff response.
I hope everyone has a great week!