Strange issue, that I cannot get consistent results creating.

I'm creating pop out boxes, click on text/icon then an box appears with more detail (using fade, but any intro/exit animation has the same result).

If I add text to the pop out box, it is the clickable when not visible. This has only just started occuring and is not consistent. I can recreate a slide without the issue, but the problem seems to be intermittent.

I appreciate this probably sounds like waffle, but it's difficult to articulate the actual problem!

Has anyone encountered a similar issue?