No, it's the App. I deleted it shortly after the last update. It kept locking up when I tried to mark forums read. I discovered that it did not like when the last post was from someone on the ignore list. There is no way to tell that cause it does not display anything in that case. I don't have those issues now and the shunned names are visible in a placeholder on the full site. BTW, I almost exclusively access the web via my iPhone.
The recipe for perpetual ignorance is:
Be satisfied with your opinions
and content with your knowledge.