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I've been seeing this issue a lot in the last week or so - when I try to edit or create a post I get these white and pale yellow shapes popping up "on top" of the form. The bright yellow button seems to be "Post", so if you click it you get a blank comment which you cant edit.
I've seen this on multiple machines at multiple sites, multiple browsers. I think something is broken in the forum app.
That is correct it looks like the lightbox for image upload but in my case, no, I was clicking "Post" for a blog article and I had never even uploaded an image. I was able to pretty regularly reproduce the error all day yesterday, I was working on a blog article. Also, the lightbox is completely unresponsive and in fact the entire page becomes unresponsive, you have to use the "back" button of the browser, which in my case totally restarted the blog article as a "New Article".
I just saw these tonight, they occurred when I was creating a blog post and trying to paste in "M" query text from the Advanced View. However, I saw a forum post from someone that had "M" code in it from the Advanced View and seems like he/she was able to post it OK. I think I also had this issue when pasting in a table.
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