Within the last few days, I started having a problem where if I delete an annotation, the page zooms into the single column as shown below. It still highlights as if it were normal, and if I zoom in or out, then it snaps back to normal. I thought that it happened when highlighting as well, but I can't seem to replicate that at the moment.
I've seen it on a couple papers, but most recently, the one available from here: http://aem.asm.org/content/71/5/2501
Edit: This appears to be happening with all of my papers, including ones that I have successfully annotated without problems before.
In addition, I'm having problems with highlighting and searching. Depending on my zoom level, the search highlighting can be very off, like this search for 'mucus' at two consecutive zoom levels:
And here is that sentence selected and then highlighted:
If I clear the search and highlight at the same zoom level, I get this:
Thanks in advance! Let me know if there are any other details that will help you debug.
(Edit 2: The above screenshots were from this pdf: http://erj.ersjournals.com/content/21/1/37)
Edit 3: The zoom problem also occurs when undoing a highlight.