floating layer blocked

[Ps2Gimp]

Gimp is so different than ps. On with the basic newbee-death-freeze.
After scaling, or any transform,Layer is non-practicable.
How to normalize the layer & move on?
Thanks

[programmer_ceds]

1 right-click on the floating layer in the Layers window and select "Anchor Layer"which will merge it down on to its associated layer.

2 right-click on the floating layer in the Layers window and select "To New Layer"

3 right-click on the image and select the Layers menu then one of the options in 1 or 2

4 Use the main Layers menu then one of the options from 1 or 2

[Ofnuts]

This is the "floating selection"(*). When you have a selection and apply a transform to a layer, only the part in the selection is transformed, and left in that floating layer, that you can either anchor (merge back into its source) (Layer ➤ Anchor or Ctrl-H) or create a new layer (Layer ➤ To new layer or Ctrl-Shift-N).  You can also apply some tools (move, most notably) to that floating selection before you anchor. Gimp disables the rest of the tools to have you make a decision.

However, this is one case where "Select all" and "Select none" are different. If there is no selection, the transform is applied to the layer directly, there is no floating selection.

(*) Which is admittedly a left-over from a time where Gimp had no layers and from another time where layers where costly.