My Lr mobile after recent update always revert back to original file after I paste edit and move to the next image. It also doesn't save versions, whether named or auto. I have to edit and save instantly to retain my edit in export.

If I copy an edit or choose a preset for my image, on leaving the image to the next image, the edit reverts to original. It's like no edit stays, because even when I edit from scratch, like in the attached images, I adjusted my saturation and vibrance slider, but on coming back to the file, it's reverted back to original image. I can't also save versions. There is also no auto saving of versions.