Currently, if you have several pictures with the same description and you open them altogether in a "Edit details" dialog, you can see such description in the 'description' field (as they all share the same text it is shown).

However, if you now remove that description and press Ok, frogr won't change it at all. This is because a bug: when opening multiple pictures for editing, frogr thinks that leaving the description empty means "no changes" to be done, which is ok when the pictures being edited have different descriptions, but not in this case.

Thus, frogr should take the text that is shown in the description field _when loading_ the dialog as the "reference text", and do the pertinent changes when pressing Ok, whenever the text there is no longer equal to that "reference text".