Just experienced this in latest version of chrome. Nextgen version 2.0.40 with WordPress 3.9-alpha-27234
Tried deactivating and reactivating plugins, latest version of flash installed etc. and still no joy.
After trawling the forum here for answers cam across posts requesting this feature over 4 years ago and still nothing. So not holding out hope of a solution so am now on with searching for suitable replacement gallery to Nextgen.
