https://bugs.kde.org/show_bug.cgi?id=415439

Ahab Greybeard <ahab.greybe...@hotmail.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|REPORTED                    |CONFIRMED
                 CC|                            |ahab.greybe...@hotmail.co.u
                   |                            |k

--- Comment #1 from Ahab Greybeard <ahab.greybe...@hotmail.co.uk> ---
This is interesting and best observed with only one new transparent paint layer
in the image.

If you fill a selection with a colour then the entire layer is filled with that
colour but inside the selection the Alpha=255 and outside the selection the
Alpha=0. This is observed using the Colour Selector Tool's display of RGB/A
values.

If you then Invert the selection and perform a Clear (Del) action, the
displayed RGB/A values don't change and there is no change in the layer
appearance but RAM usage drops and you see this in the layer thumbnail as was
described.

If you then Undo Clear, the entire selected area (outside the original filled
selection) becomes filled with the colour so that the entire layer is filled
with visible colour. This is obviously not the correct result from a user's
point of view.

What does Clear actually do?
What does Undoing Clear actually do?
If an area is tranpsarent, what RGB values should it have?

I'll set this to Confirmed because the behaviour results in some inconsistency.

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