There is no key for the icons being used.
I am having this exact same issue. We just noticed it this morning. Our audit log indicates nothing that would cause this (just general user management). Our build info is below:
How do we know what they mean / where can we find out?
Example, I'd like to know what these (and other icons and numbers mean)
If you hover over each of those icons, it shows you what it's for.
Gray is story points (or whatever you measure by) not started
Blue is measurement in progress
Green is measurement done.
See my example below. When you hover it shows total story points or whatever you are measuring by. I use story points.
I can't say I've found a listed key anywhere, but much of Jira is hover help. Otherwise, I search community like you all did here.
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