Sliding not honored when object is hidden
Operating system version
OS X 10.9.2
Description of the issue
If a grouped object is set to slide up during preview and shorten the enclosing part, when it is conditionally hidden, the space it had taken up is not closed when viewed in preview.
The hidden grouped object does not retain the full-size space it had taken up before sliding. Instead, the layout acts as if the object takes up no vertical space at all.
A big empty space where the 'hidden' object had been.