Great. The non-deco thing was intentional, but besides it there are 3 things.
1st, no-deco makes us want to use elements for pixel arts, like fire and thdr.. automatic fire view in thumbnails ruins them.
Fire View should be OFF or at least optional.
2nd, thumbnails not updating at all.
By deleting deco in thumbnails, the person which did that also deleted their updating function.
3rd, this, which R3APER found out. Something changed the quality on Android.
1 removal caused 3 problems, 2 of them being actually serious bugs.
I'm sure this will be fixed, though.
It doesn't look so bad to me when I use Magnifier. It just lookes bad when it's small.
I posted a comment on it.. while making a party because you finally realized the thumbnail non-update bug dimensions.
Thumbnail updating seemed to be affected until someone fixed it, though.