Due to a computer malfunction, we had to reinstall our copy of Acrobat XI Pro on a new machine. The installation seemed to work fine except for one very strange glitch.
In the interface -- not referring to document text -- there are three buttons on the top right for Tools, Fill & Sign, and Comment. If you click on these, the ones for Tools and Comments look perfectly normal. When you click Fill & Sign, however, the text is practically microscopic. Zoom doesn't help, because the document text isn't the problem.
I tried to repair the installation with no luck. I will try a fresh install next, but I wanted to check here first. Has anyone ever run into this problem before ? Is there a fix?