Your layer has no transparency or mask. That's why Ctrl+clicking the layer thumbnail isn't working.
I don't have a copy of CC 2015 to go through the background removal tools that were available back then. It's outdated. If you already have Photoshop CC, it's free to update to the latest version. It has some additional tools that make selecting the subject ...
Looks like your image has been 'cropped' and then again merged with another white layer (as somewhat visible from your Layers panel). Or maybe a white background is applied to inverted selection of your initial selection. I haven't used 2015 version, but I feel this is the issue.
Does your image have transparent pixels around it? If yes, it should work like ...
How about using Generate Image Assets instead? This feature is amazing but often overlooked.
Enable it from the menu File > Generate > Image Assets;
Rename layers/groups/whatnot to file names and, optionally, add size variables;
Generate will pickup those and export them instantly;
An example. My setup: 2 artboards, some groups and layers:
In Photoshop (I think this is what you are referring to)
Use Select > Color range to make a selection by colour
Do Layer > New > Layer via copy or Ctrl+J
Use the Select by Colour tool to make a selection by colour
Do Edit > Copy or Ctrl+C
Do Edit > Paste as > New Layer in Place
There's no default shortcut in GIMP for the last ...
Having the same issue where certain paths are not included in the PDF output, Google found this page. @Adrian's solution didn't work for me. I had no "extra" paths, but initially, I thought it was a setting in the PDF save options. His answer put me on the right path (pun intended).
Here is a screenshot from Photoshop:
And here is a screenshot of ...