After a transformation is applied, the decoration is turned off but transform tool is still selected. In this state Ctrl+T does nothing. The problems with this behavior are:
 - It breaks consistency of user experience, since in every other case Ctrl+T does not only call the transform tool but enables decoration.
 - When you focus on your artwork your actions become unconscious and you may automatically use Ctrl+T when not seeing the decoration, and expecting it to work - when it won't, it causes confusion/frustration and breaks your flow. Implementing this feature would ensure an undisturbed, fluid workflow.
 - It is confusing for new users, especially those who are used to using Photoshop, where you have to press Ctrl+T again for another transformation.
 - It is good to provide working shortcut alternatives for something that would otherwise require clicking a button or the canvas.

I don't see why Ctrl+T shouldn't turn the decoration back on when used, as a convenience feature.


Personal note: I'm the type of artist who often gets into flow, and things like this can be extremely frustrating for me. I cannot speak for others but for me, this seemingly minor convenience could in fact save the day when I'm in a fragile state of hyper-focus.

Reproducible: Always