Xcode 8 Adding Layout Margins Crash

Question

When I try to add layout margins to a label on a TableViewCell, using the right panel on Xcode, I try to add Explicit Margins (top, Left, Bottom, Right). But, as soon as I input a number value, or tap the arrow to change the value, Xcode crashes.

I've attached a photo to show the panel I am trying to add the layout margins in, and where it crashes.

Any ideas why it wont let me adjust the margins?

Answer 1

try to clear the constraints, connect/ reconnect the outlet and apply new constraints.