Material Editor Copy/Paste bug

It appears using the duplicate command alters the clipboard. When trying to copy & paste a field from one vector to another, I experienced a weird dialog expansion (goes wider than the screen).

Steps that produced result.

  1. Opened a vector3 and changed the V parameter.
  2. Copied V parameter into clipboard.
  3. Duplicated vector3.
  4. Opened second vector3 and pasted previous value into V field.

And Ctrl-Z will resize the dialog (takes the weird value out of the field).

Hello Justice777,

You have found quite the bug here! We appreciate you taking the time to test and enter this report. I was able to reproduce this issue back a few engine versions so it looks like it has not been in there for some time. Follow the link below to track the issue in regards to its progress getting fixed.

UE-38786

Let me know if you have additional questions or need further assistance.

Thank you,