P: Most functions in Edit, Image, Layer, Select and Filter grayed out for image opened from LrC

Can't replicate on this end, Mac OS Mojave. LR sends the raw to Photoshop, opens it, renders with ACR, no grayed out menus. A Windows only issue? 

Same here, now you think they would have gotten that one fixed right away. It is totally bass ackwards. 

This is a likely due to a known problem with the recent release of PS 20.0.1. Open PS first and leave it open. When you want to do more editing in PS on an image you are working on in LR they should  open in PS as expected with all relevant editing commands available. See earlier comments from Jeffrey Tranberry on this issue.

Hi!

My photoshop recently updated to CC v.20. I usually work between LR and PS, using the LR as a raw editor and PS to do the manipulation. 
Since the update, I've experienced problems in PS. Sometimes doesn't recognize the file, not allow any function. Other times, allows it but gets really slow, presents problems in preview the effects, etc.
I'm not versed in code nor computer language, however, I cannot find any error or crash drive. CPU seems to be working normally and it seems recognized by PS. If I open the exact same file directly on PS, runs just fine. 

Kind regards,
Alexandra

I've now simply uninstalled PS 2019. Now LR defaults back to opening in PS 2018 which works fine. I'll reinstall once this has been sorted.

A workaround is to close the file, then re-open from the Photoshop home menu, then it works. It's clearly a bug, though.

I have exactly the same problem too. The restart after 20.0.1 seemed to fix it...ONCE. I assumed after going to bed last night it was sorted but upon restarting the PC again this morning and reopening Lightroom any subsequent images opened in PS are back to having most of the menu options greyed-out! Incidentally why is my creative cloud menu saying I have BOTH PS 20.0.1 and 19.1.7 installed?

This subscription is like politics and taxes. When they know they get our money they don't feel obligated to keep the word they gave. And when there's no consequence for that, we lose badly.

We're investigating this issue. Looks like launching Photoshop first, then launching Lightroom will force this to work correctly.

Same problem here! How I am going to work with my photos now? How to revert this change? Why official release is not tested with Lightroom????