This is most notable with the new 'Lucky Upgrade' effect - the lucky callout can appear on powers that cannot be upgraded.
Steps to Reproduce
Pick up an unupgradable power, such as Constructive Criticism
Attempt to roll the lucky effect, despite it being unupgradable
The 'LUCKY' callout will play when successful
A developer has marked this issue as fixed. This means that the issue has been addressed in the current development build and will likely be in the next update.