If you are regularly using Facebook pages, then I'm sure you might be experiencing some issues or something unusual like a bug. A few days back, I had issues with the GIF images on our Facebook pages, and I reported that to Facebook. If you have any such issues, there is a way to contact Facebook and inform about the error/issue you are experiencing.
In this form, be as detailed as possible. You can mention the web address (URL) of the page and you can also upload a screenshot for explaining your issue.
You can use this form to report and let Facebook know about the issues you are facing on your/other Facebook pages! Let us know if you have tried this before and if it really helped you or not.