renahs Could you check to see if the bone's Select property is disabled?:

If this property is unchecked, the bone will be translucent and not selectable in the viewport.

renahs Problem statement

Describe: 1) what you have tried, 2) what you expected, and 3) what actually happened.

Give step-by-step instructions so we can reproduce the problem, if possible.

Editor information

Tell us your Spine Editor version.

Post your entire spine.log file here (or attach it), if you got any error messages.

Please note that it does not provide any information if you just paste the blank form regarding "Problem Statement" and "Editor Information" without filling it out. The questions like "Tell us your Spine Editor version" are there so that we get all the important information we need in order to be able to help properly. If you don't answer the questions, there is no real point in pasting the question text .