As well as transforms swopping when syncing with the opposite format I have found another annoying error...
When syncing changes to radial filters on one image that has a set of virtual copies cropped differently Lightoom Classic now no longer places the radial filters in exactly the same relative positions.
Meaning a bridge in the middle of an image with a radial filter added will not be in the same relative position and not even the same size as the original when synced to other virtual copies.
This never happened before. Can I strongly suggest scrapping 10.3 and going back to the version when transforms actually worked properly?
Copying local adjustments between photos with different orientations (e.g. between a portrait raw rotated in-camera and a TIFF from editing in PS) has always been flakey. LR 10.2 fixed some of the problems but introduced new ones.
and be sure to click Like and Follow at the bottom of the first post. That will make it a little more likely Adobe will prioritize the fix, and you'll be notified when the bug's status changes. Product developers rarely participate in this forum and won't see your feedback.
The bug is marked "Planned", which means that Adobe has acknowledged the bug and is thinking of fixing it sometime, but based on past experience, that could be the next release or a year from now (or never).
I will soon be releasing a plugin that correctly copies all the local adjustments: crops, graduated and radial filters, spot removals, red eye, adjustment brush, and manual transforms. I'll post on the bug-report thread when it's ready.