P: Revert UI to older Camera Raw UI (12.2.1) after Interface Changes

Couldn't agree more. The process to revert to 12.2.1 that I did yesterday was quick and easy, it works flawlessly with the most recent version of Bridge, and most important I have my super-efficient workflow back https://helpx.adobe.com/camera-raw/kb/camera-raw-plug-in-installer.html#12_x

I went back to 12.2.1 yesterday. Process was quick and seamless, everything is back to normal (no conflicts with most current version of Bridge) and I've never been happier with a software install. Am grateful for those that provided helpful posts here.

My pleasure William. I am also a long time PS user. I've always been happy with previous update to both PS and ACR. This one surprised me in how much longer it took for me to do the things I do on a daily basis.

Thanks as one who has been using PS since its very first released, I'm a bit stunned that the redesign with the tools on the side as opposed to the top was ever thought of as a good idea, let alone being adopted in a released update.   Thanks for your help

Everything was right where it was before the horrible update.

Many thanks - I appreciate that.   And that will get the tools back to the original position in ACR I'm assuming

William, I didn't need to uninstall 12.3 to reinstall 12.1. It was an easy process and so delightful to have the old ACR back.

Certainly feel the same Mia.   Can I ask if you need to uninstall the latest version before you install the previous version please ?

Yep, as often all the fuss is simply caused by new functionality that people do not know about, rather than the removal of existing functionality. Adobe could and should add more comprehensive information to such update (although that doesn't guarantee that people will actually read it).

After having had  a go with ACR 12.3. on my 13" laptop that I carry along on assignments my dislike for this update is fortified. The Full HD screen is set  to 125% and this results in lots of scrolling to reach tools or buttons that were readily accessible before. This makes one wonder if anybody seriously working has ever tested this UI redesign. 

Cropping... another mess. Selecting the crop tool reduces the size the image is displayed and after being cropped the image is not resized to fit the ACR window again like it was done in previous versions. 

I simply don't get why Adobe would think that it's better to have two tools being very similar instead of two providing a different workflow for different needs. The number of (professional) photographers prefering the speed and UI simplicity of the "old" ACR should not be small. 

PS and LR always pushing to the foreground when starting up, continuously obstucting working with other programs in the meantime, littering my computer with Adobe folders everywhere, even where completely out of place like My Documents for settings, to me is symbolic for Adobe's perception of itself and it's software - we are important, not the user.