In the LR 6 / CC the White Balance tool can behave such that each click of the eye-dropper sampling tool allows only a single sampling, then the eye-dropper moves back to it’s dock in the Develop Module – Basic panel. It’s kind of annoying if you’re pecking around trying to find something neutral …
You can control this behavior.: make sure you’re in View | Loupe mode (D) , Turn on the Toolbar, (T)
( Note: You can choose the sampling loupe gridsize as well.)
The WB eye-dropper is over a tan area on the second rock, near the top edge. The “loupe” is the 5×5 grid.
Auto Dismiss – one click allowed with the eye-dropper tool if it’s checked ; unlimited (well, whatever that word means to a programmer) unchecked.
Show Loupe – check to dynamically display the grid of pixels to be sampled – take your pick if you like to see what you sampled close-in.
Scale – increase/decrease the size of the sampling grid.
The picture shown is allowing multiple clicks, 5×5 grid and doesn’t jump back to the dock on each click. (it’s also over a not very neutral area…)
Learned this on the Lightroom Killer Tips blog – Rob Sylvan posted a comment detailing the solution. Lightroom Killer Tips comment
An alternative is using the “W” key to pull it up after it self-docks (assuming the Auto Dismiss were checked in the above graphic).
Handy to know …