What you're encountering is actually a feature and it's been there for some time. It doesn't work with all tools (not Pen, Crop, or Direct Select), but most turn into the Move tool when you hold down CTRL. This lets people do work, move what they're working on, and continue with minor effort. It's the same on both Windows and Mac.
Oh, and just so you know, SHIFT usually constrains a tools scope while ALT usually makes a given tool "work from the center" (mostly the selection tools).
Hope the helps,
So somewhat of a curly one. On the face of it it's almost looking like the 19.1.1 update has made some kind of system-wide change that affects Logitech wireless keyboards / unifying receivers.
I've got a support request in with Logitech - will see what they come back with.
This problem is happening across multiple input devices: 2 keyboards (Apple wireless and the MacBook built in lap top keyboard) and my Wacom EK Remote. Here are my specs:
I am using a 2014 MacBook Pro Retina.
Processor: 2.8 GHz Intel Core i7
Memory: 16 GB 1600 MHz DDR3
Startup Disk: Macintosh HD
Graphics: NVIDIA GeForce GT 750M 2048 MB
Intel Iris Pro 1536 MB
I am using Photoshop CC 19.1.6. According to my install manager, it is up to date.
I work on a Wacom Cintiq 27QHD (purchased Winter 2016), use the EK Remote for most of my shortcuts. I mostly use the Pro Pen with it. I have the same undo command keyboard shortcut mapped to the same button in most of my other programs and haven't encountered any issues other than that it will occasionally undo twice in once press. My wireless keyboard is the Apple brand. I use it occasionally out of habit and it has the same issues with the move tool. Same for the laptop keyboard.
I have drivers for my mouse and tablet that as far as I know have no effect on my keyboard inputs. I have one app (Fluor) that allows me to customize whether or not a program uses the function keys normally or with the fn key. The undo issue has been happening long before I downloaded this program or my mouse driver.
I have tried coming up with a new shortcut for the undo command but I can't create a shortcut that doesn't use the cmd key (the same one the move toggle is mapped to seemingly permanently). I could use the F1 button, but I can't stack undos the way I can with cmd+alt+z which isn't efficient for me. I've also tried slowing down my process so that I wait until I've stopped inputting the undo command, but sometimes simply hitting undo will permanently switch to the move tool and it's also just not intuitive for me to slow down a process I've been doing for 13 years. It's possible that the pen hovering above the screen is being registered as a click and that's why it will just switch the move tool so I'm going to try that next to see if it improves anything.Edit 1: Clarity and additional info about other input apps that I don't believe are causing any issues.
Edit 2: disabling the double click on hover didn't work either.