Bug report: Occasional loss of manual sort order in collection during drag drop reordering

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  • Problem
  • Updated 1 year ago

This is a bug we have seen occur about once every 80 hours of lightroom use for the last few years. With every release of Lightroom classic we hope that it will be fixed only to be disappointed again.

What goes wrong is that when we work on ordering the photos in a collection that is filtered to only show images of 3 stars and above, occasionally the entire order is pretty much randomized while we rearrange items in that collection with drag and drop. It may have to do with creating virtual copies in between as the ordering step in our workflow is also the step when we create virtual copies of selected photos and turn them into B/W photos. We have not been able to create a clearly reproducible setup, but hopefully this is enough to debug this issue.

The problem occurs on multiple machines with different, often relatively new catalogues (we usually create one new catalogue per wedding we work on). We are usually on the very latest version of Lightroom classic with windows 10 pro and up to date drivers.

This problem regularly costs us an hour or so of work and is extremely frustrating when it happens. Please let me know if we can supply any additional information to resolve this issue. Thanks!



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Daniel Bachler

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Posted 1 year ago

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Alan Harper

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Hi Daniel

I am sure that you have thought about this--but it seems to me that asking a program to keep track of the sort order when many photos are hidden could be a very difficult algorithm to implement. When you drag a photo after another photo, but there are hidden photos, where, exactly, should it go? In the few cases where I have tried to do this, I have been surprised it even worked (it did for me).

Have you thought of creating a new collection from the filtered collection, and then sorting with filters off? If you need to keep the 2+ stars photos in the collection, you could move them to a temporary collection, delete them from the current collection, sort without filters, and then move them back.

Sorry, the old joke comes to mind: Patient, "Doctor, it hurts when I do this." (Patient shows doctor.) Doctor, "Then don't do that."
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Daniel Bachler

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I disagree, this is in fact well defined operation (the order is maintained in the unfiltered state and when rearranging a photo is given the index in the unfiltered list of the photo before the insertion point + 1). Lightroom implements and correctly exhibits this behaviour in 99,5% of the operations but occasionally something goes wrong and the manual sort order is screwed up. I would appreciate it the Adobe team could flag this as a bug and let me know how I can help them in trying to figure out why this goes wrong (this works most of the time but when it does corrupt the sort order it's super frustrating).
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John R. Ellis, Champion

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Does the problem occur when you do a large number of insertions at a given point in a collection? There is a long standing bug that limits you to 52 insertions of individual photos at a given point (far fewer insertions if you’re dragging multiple photos a time).
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John R. Ellis, Champion

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Also, your report is already flagged as a bug (“problem” in Adobe’s terminology). Unfortunately, unless you can discover a recipe that would allow Adobe engineers to reproduce the bug, past experience has shown they’re unlikely to invest effort in narrowing it down themselves.
(Edited)