Photoshop "Export As" size limits?

[henrywl]

Hello folks,

Got an issue that confused me and suprised me that I couldn't find an answer by googling...

When I try to export one of  my panorama pictures using "Export as", Photoshop (V21.2) automatically scales down my pictures and gives following message: "The image's initial dimensions exceed the maximum allowed pixels and having be downscaled".

What caused this problem? Did I do anything wrong?

[Tpatana]

Ok, that explains part of it. It was flattened but 32b.

But it doesn't explain why the export-as started working after rebooting PC.

[Dynast]

Under file, do "Save a copy". It'll allow you to save as a jpeg at the big size.