My browser / operating system: ChromeOS 14541.0.0, Chrome 138.0.0.0, No Flash version detected
before the update duplicating a block would automatically drag it to your mouse cursor until placed now it doesn't do that (I swear it used to do that)

Have been able to replicate
My browser / operating system: Windows Vista, Firefox 149.0, No Flash versions detected
My browser / operating system: Windows 7, Chrome 149.0.0.0, No Flash versions detected
My browser / operating system: Windows 7, Firefox 140.0, No Flash versions detected
My browser / operating system: MacOS 11.3, Chrome 138.0.0.0, No Flash versions detected

OhOkSir12345 wrote:

My browser / operating system: ChromeOS 14541.0.0, Chrome 138.0.0.0, No Flash version detected
before the update duplicating a block would automatically drag it to your mouse cursor until placed now it doesn't do that (I swear it used to do that)

It did, you're not going crazy, either it's a bug (the “not dragging to your cursor”) or an intentional patch. I hope it isn't a patch; I liked that feature very much.

Can Replicate
My browser / operating system: Windows 11 Pro, Chrome 147.0.0.0, No Flash versions detected

Also dupe?