P: Mobile: Offline export fails despite having “stored locally”

Just out of curiosity I downloaded a sample raw from the A7R III, which is possibly your model of camera? Anyway, the resolution is the same 7952 x 5304. Running the same offline tests the export/share operation seemed a little longer compared to the files I was using (which in theory shouldn't matter as the smart previews all have the same long edge dimension), and it was sufficiently slower for me to see an error message briefly appear: "Unable to export (or share) while offline". If exporting to Camera Roll or Files, that message is almost immediately replaced by the blue "1 photo successfully exported" message, and if using "Share To..." the message is replaced by the share destinations dialog. But in all cases, the export/share does indeed work despite the error message.

Checking back, that error message is probably always produced, it's just not so noticeable as the operation using my own image files is quicker for some reason, meaning the error message is gone in an instant....but I should have noticed it sooner than I did.

And what about "max available" ? Have you seen the screen recordings ? Am I missing something, doing something wrong or should I test something else ?

Here is a summary of my tests on iPad:
* Small (2048) --> fails
* Max available --> fails
* Custom 1024 --> works
* Custom 1025 --> fails
* Custom 2048 --> fails
* Custom 2560 --> fails

It looks like its fails above 1024 in custom and always in max available at small. (the original image is 7952 x 5304, by the way)

Well, here is an semi-official response, Antoine. My results agree with Jim's. 

• Raw files (Canon 5D Mark IV) synced from Lightroom Classic as Smart Previews.
• iPad album set to store locally and synced. 
• Wifi is disabled

I am able to share/export as Small (2048px) and as Custom where Long Side is ≤ 2560. 

I also am not able to reproduce what you are seeing. 

Did I miss any steps here?

I’ve tried wit another album, another camera and lens, dimensions small and max available and I could never export an image, so issue is reproductible.
padOS: 13.3.1
LR: 5.1.0 93E03A

I’d like to see an official response (Rikk?) and see this post flagged as acknowledged.

All seems ok.
And anyway, if I download locally, I don't need to check everything before I enter a plane. Having thos kind of bugs is what makes LR a pain to use on a daily basis. It never works as expected...

I've tried everything I can think of to reproduce that problem with the "Small" export, but whatever I try works as expected. Which may just make it more difficult for Adobe to figure it out....it'll depend on their ability to recreate it on their own devices. The fact that we are seeing different results may even be related to the type of iPad and the iOS version...I was using an iPad Mini running iOS 12.4.3, and an iPhone 8+ running iOS 13.3.

The only thing you didn't show on that video is checking the status of the selected image prior to trying the export (I agree that the blue badge on the album should guarantee that the smart preview is stored locally, but it does no harm to check the individual file).

And I assume you tried different images and different export methods, e.g. Export to Camera Roll, with the same result?

Fails even with small:

I agree when using "Largest Available Dimensions", but cannot see any problem when exporting a locally stored smart preview when using either the "Small" or "Custom" options. I've tried different images and different export types (e.g. Save As, Export to Camera Roll, Export as...), different devices (iPhone and iPad) and they all work. 

Yes, you can see it in the video: stored locally checked and the blue check on the album indicating it's sotred locally. I can also edit the file normally, meaning the file is there. It's really a bug.