A graphics glitch?

[Diane Miller]

Apologies that I don't know what it is called, but this thing pops up sometimes and sticks to my cursor.  I sometimes manage to shake it loose but I'm not sure how.  What am I doing wrong?

Mac Pro tower (Mid 2012), OS 10.10.5.

[pfile]

that's the readout preview and should only appear if you click in an image and hold the mouse button down. are you using a tablet?

you can turn it off from the triangle that appears next to the readout data in the bottom status bar. the triangle is a popup menu and the menu item is "readout data" > "show readout preview"

rob

[Diane Miller]

Thanks Rob, that did it.  Yes, I'm using a Wacom tablet but it does the same if I use the Apple Magic Mouse.