Previously, it wasn’t or I didn’t notice it, but now if you use the “Assign to me” button:
It is not known whether the issue is assigned or not, as “Claim Issue” button is still active:
Only after using the second possibility of assigning to oneself the issue of changes appear:
It’s a good idea to make the “Claim Issue” button disappear when you use the “Assign to me” option.
Or, remove the “Assign to me” option if it doesn’t work as expected.