Since "yesterday's update" was only for PSCC - from 20.0 to 20.0.1 - and didn't affect either LR or ACR, this sounds more like a PS problem.
I did the Photoshop update yesterday, and Ctrl+E works as expected on my Windows 10 computer.
Two things, I will comment separately as to separate your reply’s.
1. When you are in LightRoom, in Develop, and you select edit, do you see edit in PhotoShop?
if not, reinstall PhotoShop
2. Please, in LightRoom, click on HELP, click on SYSTEM INFORMATION, click on copy, past the info in your reply.
Answer to 1. No. But if I right click on the image I can select edit in lightroom.
Lightroom Classic version: 8.0 [ 1193777 ]
License: Creative Cloud
Language setting: en
Operating system: Windows 10 - Home Premium Edition
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 4.0 GHz
Built-in memory: 16256.1 MB
Real memory available to Lightroom: 16256.1 MB
Real memory used by Lightroom: 806.8 MB (4.9%)
Virtual memory used by Lightroom: 915.4 MB
GDI objects count: 611
USER objects count: 2323
Process handles count: 1632
Memory cache size: 0.0MB
Internal Camera Raw revision: 61
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 245MB / 8128MB (3%)
Camera Raw real memory: 256MB / 16256MB (1%)
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Displays: 1) 1920x1080
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
Graphics Processor Info:
Check OpenGL support: Failed
Version: 3.3.0 - Build 220.127.116.1135
Renderer: Intel(R) HD Graphics 4600
LanguageVersion: 3.30 - Build 18.104.22.16835
Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic CC
Library Path: C:\Users\Mark\Pictures\Lightroom\Lightroom Catalog-2.lrcat
Settings Folder: C:\Users\Mark\AppData\Roaming\Adobe\Lightroom
2) Canon Tether Plugin
3) DxO PhotoLab
4) DxO PhotoLab Importer
7) HDR Efex Pro 2
8) Luminar 2018
9) Nikon Tether Plugin
Config.lua flags: None
Adapter #1: Vendor : 8086
I did a screen share with an Adobe technician earlier today. He said that there was a known issue with the latest update and suggested that I install the 2018 copy of photoshop. My post was moved by an Admin from a Creative Cloud forum to this one. Thanks for your help
Several people have had the issue wher in LR the edit in PS was missing, reinstalling PS fixed, I had this issue.
incidentaly, when You open up your Adobe Creative Cloud Desktop, and enter the Apps tab, do you see more than one instance of PS, perhaps 2019 AND 2018, despite thinking their should only be one? Some users have had that issue,I had that, uninstalled the extra, later my edit in PS was noticed by me, don’t know if the two oddities are related.
I have uninstalled PS twice but no change - I will try again tomorrow.
The Adobe technician installed version 19.1.7. So I have version 20.0.1 also installed. They are the only versions that appear in the Creative Cloud desktop. I have to click on Installed Aps to see the 2 versions - on 1 version of PS appears in Aps
Nasty, I was about to state "Well, my copy: as shown below. I am not seeing these issue." But, Yep, IF you launch PS first it behaves. If PS is not running, and you "edit in" PS fails (to display many many menu items)
Adobe Photoshop Version: 20.0.1 20181029.r.41 2018/010/29: 1197484 x64
Number of Launches: 29
Operating System: Windows 10 64-bit
Version: 10 or greater 10.0.17134.1
System architecture: Intel CPU Family:6, Model:14, Stepping:3 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, AVX, AVX2, HyperThreading
Physical processor count: 4
Logical processor count: 8
Processor speed: 4008 MHz
Built-in memory: 16317 MB
Free memory: 10449 MB
Memory available to Photoshop: 14927 MB
Memory used by Photoshop: 70 %
Alias Layers: Disabled.
Modifier Palette: Enabled.
Image tile size: 1024K
Image cache levels: 4
Font Preview: Medium
Thank you for your help. The thread describes my problem but in a much more accurate way than I did. After spending a day on this I reverted to the previous version. Spent the evening viewing ON 1 tutorials.