For related X, Y, Z fields of Location, Rotation and Scale in the Transform panel of the 3D view 'N-Region', there is a possibility to change the 3 fields at once. It can be done with the mouse or with numerical input.
But it seems 'Dimensions' fields behave strangely (entering individual values works as expected). Sometimes the value is lost after being entered, sometimes only two fields are changed. An example:
- When using the mouse, Y is left unchanged (expected: All values adjusted in proportion).
- The final dimensions X and Z are different (expected: Final values are starting values times the same factor).
- When entering the value 5, the result is 2 (expected: 5, whatever the scale value).
Is this a bug? If not, what is the reason to prevent this single input?
Using 2.79b.


C.object.dimensions = (5, 5, 5)in py console works as expected. – batFINGER Aug 22 '18 at 17:06