What is happening when you answer a question and it will not post?

It would be more acceptable if it were to be a glitch, but it really does look like Blocker Trolls. That's why a 'you've been blocked from answering this question' notification needs to pop up. Of course the board will start to look a bit silly when most are flagged that way.

If its only Happening on One Particular Persons Question Yes it is Possible that you may have been Blocked by the Asker

Yes, that is possible, BUT very likely your answer is too long to post. Your answer is probably longer than the character SPACE limit for your device. In addition, you have to manually set your nobile device AND your BROWSER to desktop MODE. You may NOT get that 10,000 character space limit on answers until you EDIT your answer. 

The new format IS in beta testing. 

Its been happening lately to a lot of users, its either a glitch or you have been blocked by the person asking the question. Whomever is in charge of this site, needs to fix it so users know they have been blocked before they leave long, thought out replies.

No, it doesn't mean that.

I have discovered this myself today. It appears that when you spend a lot of time trying up a long answer, it will lock you out from answering THAT particular question, but you are still able to answer other questions.

Even if you were to return to the same question and try posting the answer again, it still won't let you. If a user blocks you, you won't be able to type an answer in the first place.

Be very careful when pressing Enter. I've got caught several times. Now I prepare long answers on Notepad.