We have a web viewer that is used to show comments about an object, and allows entry of new comments. This works great in OS X, with both FM 12 and FM 13. We are now getting reports from a few people who are using Windows 8.1 that they can see the comments, but they can't add new ones.
I can't say for certain if this worked OK in FM 12 on Windows or not; I don't recall that we specifically did any testing on Windows when we first built this feature (which was about 1.5 years ago), but haven't had any complaints until recently. We did just make the switch to 13 about 1 month ago; the pool of Windows users is very small at this company (2 people).
The web viewer itself is defined using all local fields, including the JQuery library. We don't fetch anything from a remote CDN.
So...anyone have ideas? It works fine in the standalone IE browser, but fails when viewed in the FMPro client web viewer.