I use LR Classic on my laptop and sync to LR Mobile on my Android phone and iPad. When I sort the images in Date Modified order on my phone, some images have future 'modified dates' on them. The same images on the iPad app are fine. It's always one day out, i.e. I can edit an image on my laptop and it immediately syncs with my phone with a modified date of tomorrow on the Android app.
I removed and reinstalled the app, but that didn't fix it.