This is an issue I've been dealing with for years...ever since the C2 days.
Across two laptops and using both the built-in touchpad and an external mouse (several different types), at least half of the time (lately, as much as 90%), when I click on an object while holding down CTRL and drag to make a copy of that object, upon release of the mouse button, the image editor invariably will open. I do not double-click.
I have tried every variation I can think of to prevent this or figure out what's causing it. Such as...
- Releasing CTRL at least a second before releasing the mouse button.
- Releasing the mouse button before CTRL.
- Lingering the mouse at the destination in the layout for a moment before releasing anything.
I don't know how to replicate this outright other than to keep using the shortcut and maybe (but almost always) it will happen again.
I could use some input/insight from someone who is more technically-minded than I am with C3 and/or hardware. Before I submit this as a bug, I wanted to get some feedback first.