Canvas/Artboard panel: Stepping the number field don't work

[Raaskot]

Stepping the number field (x°+1) with up-arrow key works as expected but a another repeated step just makes the cursor jump to Artboard/Canvas item above!

Is this intended or is it a bug?-->

[VectorStyler]

@Raaskot It looks like a bug, I try to fix it ASAP.